Hello,

I tried to Change the backgroundcolors of the Office2013 Theme for the XamRibbon.

I Use the XamRibbon in a XamRibbonWindow. I tried to Change the Color with the BrushWasher, whitch work fine for any other themes. 

but i like to use the flat style from the Office2013 theme. 

Furthermore I try to rebuild the style I've created in the Infragistics AppStylist 2018.1 for forms. 

I tried to Change the Transparent KeyColors of the theme, which are created from the ColorTuner. Unfortunaly Nothing happen.

So now i try to Change the WashGroups and the wash Color TabArea. 

Hopefully I have to finde the Right WashGroup Name.

But, I guess, the backgrounds a transparent by Default. So I look for the Right theme to change. But where is

"xmlns:themes="">infragistics.com/Themes"  saved?

<ribbon:XamRibbonWindow
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WPFWindowHostWF"
        xmlns:ribbon="http://infragistics.com/Ribbon"
        xmlns:forms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
        xmlns:themes="http://infragistics.com/Themes"

        x:Class="WPFWindowHostWF.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" WindowStyle="None"
        SizeToContent="WidthAndHeight">

    <ribbon:XamRibbonWindow.Resources>

        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <!-- First, import the base theme we are going to wash to ensure
                    the correct ControlTemplates are used-->
  
                <!-- Add a ResourceWasher -->
                <!-- Note:
                    1. The WashMode property defaults to "SoftLightBlend" but can be set to "HueSaturationReplacement"
                    2. If the WashColor of an individual WashGroup is not set or is left to its default value of "Transparent" then the resources are not washed
                    -->
                <themes:ResourceWasher AutoWash="True" WashMode="HueSaturationReplacement" WashColor="Gray" >
                    <themes:ResourceWasher.SourceDictionary>
                        <ResourceDictionary>
                            <ResourceDictionary.MergedDictionaries>
                                <themes:RibbonOffice2013/>
                            </ResourceDictionary.MergedDictionaries>
                        </ResourceDictionary>
                    </themes:ResourceWasher.SourceDictionary>
                    <themes:ResourceWasher.WashGroups>
                        <themes:WashGroupCollection>
                            <!-- Specify WashColors for each WashGroup in the Theme. The WashGroups are the same in all themes. -->
                            <themes:WashGroup Name="TabArea" WashColor="Red"/>
                            <themes:WashGroup Name="Pressed" WashColor="Red"/>
                            <themes:WashGroup Name="BaseColor" WashColor="Red"/>
                        </themes:WashGroupCollection>
                    </themes:ResourceWasher.WashGroups>
                </themes:ResourceWasher>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </ribbon:XamRibbonWindow.Resources>

Best regards,

Nico