How to apply style to a particular row of a table in a header template of a GridTemplateColumn?

[Antonio]

I have  RadGrid that has multiple headers. I use GridTemplateColumns to get this effect. I want to colorize a certain row in this header. When I set that row's background color what happens is that just the text cell gets the color and not the entire row cell. Please see attached for desired effect. The inner table won't accept the color right.

[Shinu]

Hello Antonio,

Try setting the following CSS.
CSS:

<style type="text/css">
.RadGrid_Default .rgHeader, .RadGrid_Default .rgHeader a
 {
    background:red!important;
 }
</style>

Thanks,
Shinu.