The Green Monster!!

My little Tres-man has been quite entertaining in recent months. He parrots ANYTHING you say (down to things that really shouldn't be repeated!), he plays with everything, and he makes a mess everywhere! Today, after his daddy dropped him off to me at the office, I was busy on the phone, and all of a sudden my son had become a little green monster. He had located a green dry-erase maker... heaven knows from where... and had proceeded to color both his arms, both his legs, up to his thighs, and down his nose with green marker! I cleaned him up, but he still has a green tint!