Gave a few touch-ups and highlights to my spare G1 keychain Bumblebee. Just used Sharpies and paint markers, and filed off the plastic and remaining epoxy glue on his shoulder where the broken chain loop that was often re-glued used to be.
* black Sharpie to restore the rear bumper and the worn-off paint on his robot back
* silver and white markers for the headlights
* silver Sharpie for the bumper guards and the tailpipe, plus a very thin highlight down the middle of the hood
* red paint marker for his taillights, like on a real VW Beetle
* yellow paint marker for the back of his headplate (the sticker came off and the chrome was completely faded), plus the O-shaped ridge on his robot back