For TGS 2013 Cospa wanted to make a Sonic mug. Since this is just a picture of what they want...it's a prototype art. The white mug would have a sort of greenish grayish pixelated art of Sonic in Green Hill (or similar area on maybe the Game Gear?) But why remove the color? Unlike Mario, Sonic wasn't really on a colorless system like the original Gameboy (which was olive greenish gray) It seems an odd choice, but the mug will look unique.