Multi-Color Demo 4 (Bob Colbert) (PD) ROM for Atari 2600 (A2600). Multi-Color Demo 4 (Bob Colbert) (PD) game is available to play online and only onRoms Games. Multi-Color Demo 4 (Bob Colbert) (PD) ROM for Atari 2600 requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.