To reproduce: radDock1.ElementTree.EnableApplicationThemeName = false; radDock1.ThemeName = "TelerikMetroBlue"; ThemeResolutionService.ApplicationThemeName = "Office2013Light"; Workaround: ThemeResolutionService.ApplyThemeToControlTree(this,"Office2013Light"); radDock1.ThemeName = "TelerikMetroBlue";