I see in your new skins that you have changed the "selected" tab background color to white in most cases. This does not look particularly good in most of my implementations, as most of my tabstrips are on white backgrounds. However, I assume there must be some straightforward way to set the tabstrip CssClass and specify a different background-color for the selected tabs.

 

Hello Albert,

 

As far as I know the RadTabStrip uses images, so changing the background color will not take effect. So one suggestion is to edit the image (change color) to required or create custom skin for TabStrip.Checkout the following links.

Setting the CSS Class of Tabs
Tutorial: Creating A Custom Skin

Thanks,
Princy.