After using a gold Gundam Marker for my POTP Metalhawk, I got the itch to fix Grimlock. I kept the butt and tail but used a spare Overboard (Overkill) for the rest of the parts. Then it was just an easy task of painting the parts gold and silver. Here is the headmaster. I swapped the limbs with Diac and painted the torso.
Haven't painted mine but did the same part-swap to give Grimlock the gray parts. Good call! the paint makes it look that much better. Nice!
Nice but question I have those same gundam markers but when I tried using then on my tr getaway it completely fell apart.