I had come across my big book of Game Genie codes I had made back when the SNES was new (well, newer than it is now. About 1997 or so.) The book was all Super Mario Kart codes. One of them turned everything either red and black. I thought that it was crazy, and the guy suggested that he was suspicious about why or how one code (as opposed to codes with multiple numbers) could change the colors so radically. Anyway, if you ever want Super Mario Kart on the Virtual Boy, there is a Super NES Game Genie code that comes very close to it. I don’t know what it is since I lost the book again, but I thought it was very interesting.
I found the code: CD64-4DDF