Hi Mark Ogle,
Thank you for writing.
Please specify whether you are using the ApplicationThemeName property to set the theme for your application. If you are using it, you will not be able to set a theme to an individual control. If you set the theme to all controls individually, then you will have no troubles modifying each control. I realize this behavior may be inconvenient for you and this is why we will consider improving it.
I am looking forward to your reply.
All the best,
the Telerik team
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