Hi Martin,
You can get use of our
Implicit Styles mechanism to easily remove the BorderBrush, BorderThickness and to make the HeaderBackground Transparent. Here's a sample:
However to be able to modify the TabItem-s background when selected you'll have to strip down the RadTabItem ControlTemplate and do the needed modifications in the Selected VisualState. I believe
this help topic will make you familiar with styles and templates and how to modify them in Blend.
Let me know if you need any further assistance.
Regards,
Evgenia
Telerik
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.