Hello Rashad Rivera,
This is a known issue in the RadGridView control. It is our highest priority on fixing such issues as well as improving on the themes in general for Q1.2010.
Thank you for your feedback. I hope this does not cause too much of an inconvenience. If it does we should be able to provide you with some kind of workaround until this gets fixed. Also I would suggest you monitor our latest internal builds for a resolution prior to the 2010.Q1 release.
All the best,
the Telerik team