Such requirement can be achieved with modifying the default Tab control templates and styles. Since you are new to the control itself and its visual structure I suggest that you get to know it from our documentation
. Also I believe that you will find our Styling and Appearance section
helpful as a guiding point from which you can start your customization.
We can guide you through the process wherever you hit something concrete that you struggle with but the whole customization should be done by yourself.
Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time. Watch the videos
and start improving your app based on facts, not hunches.