I got this idea from paint. There is a feature that allows you to match a color to a preexisting color already in play. This would make it easier to come back through and fix any color spots that you might have missed the first time. If you used a random color and were trying to match it, it gets very difficult.
@DerpLord(View Post) Point where it is in the wiki instead of just saying it's there. I don't see something in the wiki about the dropper tool he's suggesting.