I already answered your support thread and for your convenience and for others who might have teh same question I pasted it below:
When you want to change the default styles of any RadControls you should use one of the following approaches:
1) Built your own custom skin which can be a copy of an embedded one with your modifications applied and set it to the control - more details about this approach are available below:
2) You can directly override default classes by using stronger selectors as explained below:
A very simple example which demonstrates overriding the embedded skin is the following style:
In case you need further assistance, please send me a simple demo which reproduces the issue along with detailed explanations of the desired result and I will do my best to help.
the Telerik team
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