Hi Edward ,
Thank you for writing.
We do not have support for pre-defined telerik colors at this moment. Nevertheless, you could utilize a SystemColors for any color property in Visual Style Builder. You can open the color dialog by clicking the ellipsis button for the selected property and choosing the "system" tab located at the top. You can then select some system color provided by the Windows API.
I hope this helps. If you have any additional questions, please let me know.
the Telerik team