I tried to change colors in all sorts of styles but could not find which style was responsible for it
Would appreciate help
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Stenly
Telerik team
answered on 11 Apr 2022, 07:38 AM
Hello Ohad,
To achieve the desired result, you could create a new Style with TargetType="GroupHeaderButton" and utilizing the Theme Helper, add a new Setter for the CheckedBrush property. This property will change the background color of the GroupHeaderButton element (which is orange) in the provided image.
The following code snippet shows this Style's implementation: