diff --git a/addons/account/account_invoice_view.xml b/addons/account/account_invoice_view.xml
index fe8ed307aa6..2c4bf260c8a 100644
--- a/addons/account/account_invoice_view.xml
+++ b/addons/account/account_invoice_view.xml
@@ -148,8 +148,9 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="invoice_open" states="draft,proforma2" string="Validate"/>
-                    <button name="%(action_account_invoice_refund)d" type='action' string='Ask Refund' states='open,paid'/>
+                    <button name="invoice_open" states="draft,proforma2" string="Validate" class="oe_form_button_active_flow"/>
+                    <button name="%(action_account_invoice_refund)d" type='action' string='Ask Refund' states='open' class="oe_form_button_active_flow"/>
+                    <button name="%(action_account_invoice_refund)d" type='action' string='Ask Refund' states='paid' class="oe_form_button_return_flow"/>
                     <button name="invoice_cancel" states="draft,proforma2,sale,open" string="Cancel" groups="base.group_no_one"/>
                     <button name="action_cancel_draft" states="cancel" string="Set to Draft" type="object"/>
                     <button name='%(action_account_state_open)d' type='action' string='Re-Open' groups="account.group_account_invoice" attrs="{'invisible':['|', ('state','&lt;&gt;','paid'), ('reconciled', '=', True)]}" help="This button only appears when the state of the invoice is 'paid' (showing that it has been fully reconciled) and auto-computed boolean 'reconciled' is False (depicting that it's not the case anymore). In other words, the invoice has been dereconciled and it does not fit anymore the 'paid' state. You should press this button to re-open it and let it continue its normal process after having resolved the eventual exceptions it may have created."/>
@@ -274,11 +275,11 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="action_invoice_sent" type="object" string="Send by Email" states="open" attrs="{'invisible':['|',('sent','=',True), ('state', '=', 'draft')]}"/>
+                    <button name="action_invoice_sent" type="object" string="Send by Email" states="open" attrs="{'invisible':['|',('sent','=',True), ('state', '=', 'draft')]}"  class="oe_form_button_active_flow"/>
                     <button name="invoice_print" string="Print Invoice" type="object" states="open" attrs="{'invisible':['|',('sent','=',True), ('state', '=', 'draft')]}"/>
-                    <button name="invoice_open" states="draft,proforma2" string="Validate"/>
-                    <button name="invoice_proforma2" states="draft" string="PRO-FORMA" groups="account.group_proforma_invoices"/>
-                    <button name="%(action_account_invoice_refund)d" type='action' string='Refund Invoice' states='paid'/>
+                    <button name="invoice_open" states="draft,proforma2" string="Validate"  class="oe_form_button_active_flow"/>
+                    <button name="invoice_proforma2" states="draft" string="PRO-FORMA" groups="account.group_proforma_invoices" class="oe_form_button_active_flow"/>
+                    <button name="%(action_account_invoice_refund)d" type='action' string='Refund Invoice' states='paid'  class="oe_form_button_return_flow"/>
                     <button name="invoice_cancel" states="draft,proforma2,sale,open" string="Cancel" groups="base.group_no_one"/>
                     <button name="action_cancel_draft" states="cancel" string="Reset to Draft" type="object"/>
                     <button name='%(action_account_state_open)d' type='action' string='Re-Open' groups="account.group_account_invoice" attrs="{'invisible':['|', ('state','&lt;&gt;','paid'), ('reconciled', '=', True)]}" help="This button only appears when the state of the invoice is 'paid' (showing that it has been fully reconciled) and auto-computed boolean 'reconciled' is False (depicting that it's not the case anymore). In other words, the invoice has been dereconciled and it does not fit anymore the 'paid' state. You should press this button to re-open it and let it continue its normal process after having resolved the eventual exceptions it may have created."/>
diff --git a/addons/account/account_view.xml b/addons/account/account_view.xml
index 274a8993dc4..4efa8b9a2f7 100644
--- a/addons/account/account_view.xml
+++ b/addons/account/account_view.xml
@@ -13,8 +13,8 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="create_period" states="draft" string="Create Monthly Periods" type="object"/>
-                    <button name="create_period3" states="draft" string="Create 3 Months Periods" type="object"/>
+                    <button name="create_period" states="draft" string="Create Monthly Periods" type="object" class="oe_form_button_active_flow"/>
+                    <button name="create_period3" states="draft" string="Create 3 Months Periods" type="object" class="oe_form_button_active_flow"/>
                     <field name="state" widget="statusbar" nolabel="1" />
                 </header>
                 <sheet string="Fiscalyear" layout="auto">
@@ -172,7 +172,7 @@
                 <form string="Account" version="7.0">
                     <label for="name" class="oe_form_readonly_hidden" string="Account Name and Code:"/>
                     <h1>
-                        <field name="name"/> - 
+                        <field name="name"/> -
                         <field name="code"/>
                     </h1>
                     <label for="company_id"/>
@@ -589,8 +589,8 @@
             <field name="arch" type="xml">
                 <form string="Bank Statement" version="7.0">
                 <header>
-                    <button name="button_confirm_bank" states="draft" string="Confirm" type="object" />
-                    <button name="button_dummy" states="draft" string="Compute" type="object"/>
+                    <button name="button_confirm_bank" states="draft" string="Confirm" type="object" class="oe_form_button_active_flow"/>
+                    <button name="button_dummy" states="draft" string="Compute" type="object" class="oe_form_button_active_flow"/>
                     <button name="button_cancel" states="confirm" string="Cancel" type="object"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,confirm"/>
                 </header>
@@ -1270,7 +1270,7 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="button_validate" states="draft" string="Post" type="object"/>
+                    <button name="button_validate" states="draft" string="Post" type="object" class="oe_form_button_active_flow"/>
                     <button name="button_cancel" states="posted" string="Cancel" type="object"/>
                     <field name="state" widget="statusbar"/>
                 </header>
@@ -1289,7 +1289,7 @@
                     <notebook colspan="4">
                         <page string="Journal Items">
                             <field name="balance" invisible="1"/>
-                            <field colspan="4" name="line_id" widget="one2many_list" 
+                            <field colspan="4" name="line_id" widget="one2many_list"
                               on_change="onchange_line_id(line_id)"
                               context="{'balance': balance , 'journal': journal_id }">
                                 <form string="Journal Item" version="7.0">
@@ -1825,8 +1825,8 @@
                 <form string="Recurring" version="7.0">
                     <header>
                         <button name="state_draft" states="done" string="Set to Draft" type="object"  icon="gtk-convert" />
-                        <button name="compute" states="draft" string="Compute" type="object" icon="terp-stock_format-scientific"/>
-                        <button name="remove_line" states="running" string="Remove Lines" type="object" icon="gtk-remove"/>
+                        <button name="compute" states="draft" string="Compute" type="object" icon="terp-stock_format-scientific" class="oe_form_button_active_flow"/>
+                        <button name="remove_line" states="running" string="Remove Lines" type="object" icon="gtk-remove" class="oe_form_button_active_flow"/>
                         <field name="state" widget="statusbar" statusbar_visible="draft,running,done"/>
                     </header>
 
@@ -2531,8 +2531,8 @@ action = pool.get('res.config').next(cr, uid, [], context)
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="button_confirm_cash" states="open" string="Close CashBox" type="object"/>
-                    <button name="button_open" states="draft" string="Open CashBox" type="object"/>
+                    <button name="button_confirm_cash" states="open" string="Close CashBox" type="object" class="oe_form_button_active_flow"/>
+                    <button name="button_open" states="draft" string="Open CashBox" type="object" class="oe_form_button_active_flow"/>
                     <button name="button_cancel" states="confirm,open" string="Cancel" type="object" groups="base.group_extended"/>
                     <field name="state" widget="statusbar" nolabel="1" statusbar_visible="draft,confirm"/>
                 </header>
diff --git a/addons/account_asset/account_asset_view.xml b/addons/account_asset/account_asset_view.xml
index 01144c153e5..e3bde8d2734 100644
--- a/addons/account_asset/account_asset_view.xml
+++ b/addons/account_asset/account_asset_view.xml
@@ -81,9 +81,9 @@
         <field name="arch" type="xml">
             <form string="Asset" version="7.0">
                 <header>
-                    <button name="validate" states="draft" string="Confirm Asset" type="object"/>
-                    <button name="set_to_close" states="open" string="Set to Close" type="object"/>
-                    <button name="set_to_draft" states="open" string="Set to Draft" type="object"/> 
+                    <button name="validate" states="draft" string="Confirm Asset" type="object" class="oe_form_button_active_flow"/>
+                    <button name="set_to_close" states="open" string="Set to Close" type="object" class="oe_form_button_active_flow"/>
+                    <button name="set_to_draft" states="open" string="Set to Draft" type="object" class="oe_form_button_return_flow"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,open"/>
                 </header>
                 <sheet>
diff --git a/addons/account_budget/account_budget_view.xml b/addons/account_budget/account_budget_view.xml
index 363373b3204..d46e8c9d752 100644
--- a/addons/account_budget/account_budget_view.xml
+++ b/addons/account_budget/account_budget_view.xml
@@ -110,9 +110,9 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button string="Confirm" name="confirm" states="draft" type="workflow" />
-                    <button string="Approve" name="validate" states="confirm" type="workflow"/>
-                    <button string="Done" name="done" states="validate" type="workflow"   />
+                    <button string="Confirm" name="confirm" states="draft" type="workflow" class="oe_form_button_active_flow"/>
+                    <button string="Approve" name="validate" states="confirm" type="workflow" class="oe_form_button_active_flow"/>
+                    <button string="Done" name="done" states="validate" type="workflow" class="oe_form_button_active_flow"/>
                     <button name="draft" states="cancel" string="Reset to Draft" type="workflow"/>
                     <button string="Cancel" name="cancel" states="confirm,validate" type="workflow"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,confirm"/>
diff --git a/addons/account_check_writing/account_voucher_view.xml b/addons/account_check_writing/account_voucher_view.xml
index b53bdc35468..0ced8c85ab9 100644
--- a/addons/account_check_writing/account_voucher_view.xml
+++ b/addons/account_check_writing/account_voucher_view.xml
@@ -3,7 +3,7 @@
     <data>
 
         <!-- Supplier voucher view -->
-        
+
         <record model="ir.ui.view" id="view_vendor_payment_check_form">
             <field name="name">account.voucher.payment.check.form</field>
             <field name="model">account.voucher</field>
@@ -20,7 +20,7 @@
                     <field name="number" attrs="{'readonly':[('allow_check','!=',1)]}" />
                 </field>
                 <button name="proforma_voucher" position="after">
-                    <button name="print_check" icon="gtk-print" string="Print Check" type="object" attrs="{'invisible':['|',('allow_check','!=',1),('state','!=','posted') ]}"/>
+                    <button name="print_check" icon="gtk-print" string="Print Check" type="object" attrs="{'invisible':['|',('allow_check','!=',1),('state','!=','posted') ]}" class="oe_form_button_active_flow"/>
                 </button>
             </field>
         </record>
diff --git a/addons/account_payment/account_payment_view.xml b/addons/account_payment/account_payment_view.xml
index 45f42a3ab1a..380e1bf3bda 100644
--- a/addons/account_payment/account_payment_view.xml
+++ b/addons/account_payment/account_payment_view.xml
@@ -104,8 +104,8 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="open" states="draft" string="Confirm Payments" />
-                    <button name="set_done" states="open" string="Make Payments" type="object"/>
+                    <button name="open" states="draft" string="Confirm Payments" class="oe_form_button_active_flow"/>
+                    <button name="set_done" states="open" string="Make Payments" type="object" class="oe_form_button_active_flow"/>
                     <button name="set_to_draft" states="cancel" string="Set to draft" type="object"/>
                     <button name="cancel" states="draft,open" string="Cancel"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,open"/>
diff --git a/addons/account_voucher/account_voucher_pay_invoice.xml b/addons/account_voucher/account_voucher_pay_invoice.xml
index da669ad04ee..d6bb55bdbec 100644
--- a/addons/account_voucher/account_voucher_pay_invoice.xml
+++ b/addons/account_voucher/account_voucher_pay_invoice.xml
@@ -8,7 +8,7 @@
            <field name="inherit_id" ref="account.invoice_form"/>
            <field name="arch" type="xml">
            <button name="invoice_open" position="after">
-               <button name="invoice_pay_customer" type="object" string="Register Payment" states="open" icon="gtk-go-forward"/>
+               <button name="invoice_pay_customer" type="object" string="Register Payment" states="open" icon="gtk-go-forward" class="oe_form_button_active_flow"/>
            </button>
            </field>
         </record>
@@ -19,7 +19,7 @@
             <field name="inherit_id" ref="account.invoice_supplier_form"/>
             <field name="arch" type="xml">
                 <button name="invoice_open" position="after">
-                    <button name="invoice_pay_customer" type="object" string="Pay" states="open" icon="gtk-go-forward"/>
+                    <button name="invoice_pay_customer" type="object" string="Pay" states="open" icon="gtk-go-forward" class="oe_form_button_active_flow"/>
                 </button>
             </field>
         </record>
diff --git a/addons/account_voucher/account_voucher_view.xml b/addons/account_voucher/account_voucher_view.xml
index 586d06449c8..e122c99c43c 100644
--- a/addons/account_voucher/account_voucher_view.xml
+++ b/addons/account_voucher/account_voucher_view.xml
@@ -43,7 +43,7 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                   <header>
-                      <button name="proforma_voucher" string="Post" states="draft"/>
+                      <button name="proforma_voucher" string="Post" states="draft" class="oe_form_button_active_flow"/>
                       <button name="cancel_voucher" string="Cancel" type="object" states="posted" confirm="Are you sure to unreconcile this record?"/>
                       <button name="cancel_voucher" string="Cancel" states="draft,proforma" />
                       <button name="action_cancel_draft" type="object" states="cancel" string="Set to Draft"/>
diff --git a/addons/account_voucher/voucher_payment_receipt_view.xml b/addons/account_voucher/voucher_payment_receipt_view.xml
index 150830431ca..ac874424e95 100644
--- a/addons/account_voucher/voucher_payment_receipt_view.xml
+++ b/addons/account_voucher/voucher_payment_receipt_view.xml
@@ -145,9 +145,9 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="proforma_voucher" string="Validate" states="draft" invisible="context.get('line_type', False)"/>
+                    <button name="proforma_voucher" string="Validate" states="draft" invisible="context.get('line_type', False)" class="oe_form_button_active_flow"/>
                     <button name="cancel_voucher" string="Cancel" states="draft,proforma"  invisible="context.get('line_type', False)"/>
-                    <button name="cancel_voucher" string="Unreconcile" type="object" states="posted" invisible="context.get('line_type', False)" confirm="Are you sure to unreconcile and cancel this record ?"/>
+                    <button name="cancel_voucher" string="Unreconcile" type="object" states="posted" invisible="context.get('line_type', False)" confirm="Are you sure to unreconcile and cancel this record ?" class="oe_form_button_return_flow"/>
                     <button name="action_cancel_draft" type="object" states="cancel" string="Set to Draft" invisible="context.get('line_type', False)"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,posted" statusbar_colors='{"proforma":"blue"}'/>
                 </header>
@@ -297,9 +297,9 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="proforma_voucher" string="Validate" states="draft" invisible="context.get('line_type', False)"/>
+                    <button name="proforma_voucher" string="Validate" states="draft" invisible="context.get('line_type', False)" class="oe_form_button_active_flow"/>
                     <button name="cancel_voucher" string="Cancel" states="draft,proforma"  invisible="context.get('line_type', False)"/>
-                    <button name="cancel_voucher" string="Unreconcile" type="object" states="posted" invisible="context.get('line_type', False)" confirm="Are you sure to unreconcile and cancel this record ?"/>
+                    <button name="cancel_voucher" string="Unreconcile" type="object" states="posted" invisible="context.get('line_type', False)" confirm="Are you sure to unreconcile and cancel this record ?" class="oe_form_button_return_flow"/>
                     <button name="action_cancel_draft" type="object" states="cancel" string="Set to Draft" invisible="context.get('line_type', False)"/>
                     <field name="state" widget="statusbar" statusbar_visible="draft,posted" statusbar_colors='{"proforma":"blue"}'/>
                 </header>
diff --git a/addons/account_voucher/voucher_sales_purchase_view.xml b/addons/account_voucher/voucher_sales_purchase_view.xml
index dba40940166..78c8113d086 100644
--- a/addons/account_voucher/voucher_sales_purchase_view.xml
+++ b/addons/account_voucher/voucher_sales_purchase_view.xml
@@ -82,8 +82,8 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="proforma_voucher" string="Validate" states="draft"/>
-                    <button name="%(act_pay_voucher)d" context="{'narration':narration, 'title':'Customer Payment', 'type':'receipt', 'partner_id':partner_id, 'reference':reference, 'amount':amount}" type="action" string="Pay" attrs="{'invisible':['|',('pay_now','=','pay_now'),'|',('state','=','draft'), ('paid','=',True)]}"/>
+                    <button name="proforma_voucher" string="Validate" states="draft" class="oe_form_button_active_flow"/>
+                    <button name="%(act_pay_voucher)d" context="{'narration':narration, 'title':'Customer Payment', 'type':'receipt', 'partner_id':partner_id, 'reference':reference, 'amount':amount}" type="action" string="Pay" attrs="{'invisible':['|',('pay_now','=','pay_now'),'|',('state','=','draft'), ('paid','=',True)]}" class="oe_form_button_active_flow"/>
                     <button name="cancel_voucher" string="Cancel" states="draft,proforma" />
                     <button name="cancel_voucher" string="Cancel" type="object" states="posted" confirm="Are you sure to confirm this record ?"/>
                     <button name="action_cancel_draft" type="object" states="cancel" string="Set to Draft"/>
@@ -207,8 +207,8 @@
             <field name="arch" type="xml">
                 <form version="7.0">
                 <header>
-                    <button name="proforma_voucher" string="Validate" states="draft"/>
-                    <button name="%(act_pay_bills)d" context="{'narration':narration, 'title':'Bill Payment', 'type':'payment', 'partner_id': partner_id, 'reference':reference}" type="action" string="Pay Bill" attrs="{'invisible':['|',('pay_now','=','pay_now'),'|',('state','=','draft'), ('paid','=',True)]}"/>
+                    <button name="proforma_voucher" string="Validate" states="draft" class="oe_form_button_active_flow"/>
+                    <button name="%(act_pay_bills)d" context="{'narration':narration, 'title':'Bill Payment', 'type':'payment', 'partner_id': partner_id, 'reference':reference}" type="action" string="Pay Bill" attrs="{'invisible':['|',('pay_now','=','pay_now'),'|',('state','=','draft'), ('paid','=',True)]}" class="oe_form_button_active_flow"/>
                     <button name="cancel_voucher" string="Cancel" states="draft,proforma" />
                     <button name="cancel_voucher" string="Cancel" type="object" states="posted" confirm="Are you sure to confirm this record ?"/>
                     <button name="action_cancel_draft" type="object" states="cancel" string="Set to Draft"/>