Can't dyseub on abs due to the heat in the dye process, melt the plastic, so that's not a possibility. Could padprint on doubleshot, but there would be no point since you can multicolor pad print anyway.
I think if there was a black outline it would look better on white. Could always move away from 8bit style and do something more detailed from the arcade art.
I always thought this alternate take on pacman was pretty neat...