I am talking about WPF XamRibbon.

Yes I am talking about ToggleButton.

I want to change its style while the button is checked. It is giving some dark background which I am trying to set to white.

Following code I have written which is not setting the background to white.

Also If u can guide me how can i make it appear flat in checked state also.

<igRibbon:ToggleButtonTool.Style>
                                 <Style TargetType="{x:Type igRibbon:ToggleButtonTool}">
                                     <Setter Property="Template"  Value="{StaticResource RibbonButtonToolTemplate}"/>
                                     <Setter Property="LargeImage" Value="Assets/Images/huprofile-blue.png" />
                                     <Setter Property="Foreground" Value="#B00020" />
                                     <Setter Property="Background" Value="Transparent" />
                                     <Style.Triggers>
                                         <Trigger Property="IsChecked" Value="True">
                                             <Setter Property="LargeImage" Value="Assets/Images/huprofile-orange.png"/>
                                             <Setter Property="Foreground" Value="OrangeRed" />
                                             <Setter Property="Background" Value="White" />
                                         </Trigger>
                                     </Style.Triggers>
                                 </Style>

</igRibbon:ToggleButtonTool.Style>