Hello Abhay,
You can find the answer to your question in the support ticket that you have opened for the same topic.
I will give the answer here as well in case there are others interested in the case:
The Gradient style that you get comes from the GridHeaderCellElement which is painted over the row. So, in order to get a Solid style, you should set the GradientStyle of the GridHeaderCellElement to Solid as shown on the screenshot.
Greetings,
Nikolay
the Telerik team
Q3’10 SP1 of RadControls for WinForms is available for
download; also available is the Q1'11
Roadmap for Telerik Windows Forms controls.