You can change the AccentColor
from the Office2016 Palette and this way the window titlebar and ribbontabs panel will have the same color:
Office2016Palette.Palette.AccentColor = (Color)ColorConverter.ConvertFromString(
If you need to change the Background of the RibbonTabs panel - you can set TitleBarBackground
property of RibbonView. This way you will achieve the look from the attached picture.
Please have in mind that if you want to apply our Telerik themes to RibbonWindow you need to set RadRibbonWindow.IsWindowsThemeEnabled
property to false as you can read here
I hope this information is helpful.
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