Yes, it is possible, you need to override the PanelBar styles. For example, the root k-link
elements' border color should be #002d96. Their background color can can be #3769a1. If you want a glossy background, you will need to replace the semi-transparent gray background image with another one.
If you need more information and assistance with this, please use a support ticket.
All the best,
the Telerik team
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