The easiest way to change the appearance of RadControls is to pick up another Telerik theme: Office Blue, Office Silver, Summer, Vista, Windows7, Transparent, Expression Dark. However, none of them uses green as a mouse over color. If the design of your application allows it, I would suggest that you consider changing the ASP.NET controls theme to a similar match for RadControls for Silverlight, instead. For example, Windows7 or Vista would be a suitable match.
Alternatively, if you wish to dive into the customization process for RadControls for Silverlight, there is a way to accomplish the task with a custom theme. You can use the approach described in this help article
and merge resource dictionaries for the controls you use in your application into a custom theme.
The important point in this approach is that, for the sake of consistency and maintainability, most of RadControls for Silverlight use a ButtonChrome
control that is responsible for all visual states (and brushes respectively). In order to have a green mouse over color, you need to have a custom ButtonChrome that is applied to any control that uses it. The controls which do not use a ButtonChrome in their templates need to be edited manually.
We can offer full assistance in case you decide to take the course of creating a custom theme for the controls you use. Still, I believe the quickest and easiest way for you would be to switch to another ASP.NET AJAX theme.
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