Hello Anne Lyon,
The major change concerning the Office Black theme was introduced with our 2010.Q1 release. We understand that its new look could be too drastic change for your application. Please be sure that the significant changes were forced by the need of making our controls more consistent and better looking across all themes.
We understand that it is a matter of personal perceptions and we provide our customers with custom styles when the new look does not meet their requirements.
Regarding your concern about setting different theme, I didn't manage to reproduce your problem with the latest binaries by having the following line in my code:
Could you please send us a sample project reproducing your issue?
the Telerik team
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