This has always been an issue that i hated dealing with.. luckily the newer panels support transparency :). Crestron has a "bleed" feature that helped a lot. It allowed you to select a color that would be invisible so for example if you had a red background you just chose that as the bleed color and it would be transparent on the panel. Thanks for posting.
Avid Stamp Collector - I really love 39 Cent Stamps