What I did was take the GBA spine logo some awesome person on I think Snackbar-Games contributed, got rid of the "ADANCE," then just typed out "COLOR" and sized it as best I could. If you look online you can get a Gamecube font that's basically the GBA logo font when capitalized.
If you go to...
I think part of the reason we don't have a third Classic NES series released yet is because these are still selling in Japan. The two Japanese incarnations of these had almost twice (or even triple in one case? Someone should have a list somewhere). They get a ton of games, then the biggest...
You have to remove the bottom of the GBA slot, and then take out the upper clips fo the DS cartridge slot as well as the raised "containment area."
You remove a little less than half of it and the GB/GBC cartridge will fit in just fine. Except you also have to either shave off the raised area...
Why limit this just to Gameboy Advance cartridges?
Took less than five minutes with an exacto type knife once I decided on how to go about it. What's also cool is that by just taking out the bottom part of the GBA slot you're able to store Boktai and Boktai 2: Solar Boy Django almost...