I did some touch ups to my good old TM2 BW Megatron. Added lots of yellow/gold details, black feet claws, and lots of details in different shades of red that you really can't even tell I did, hah.
All I did specifically for robot mode was paint the head and visor above it. Might get pics of that up at some point.
Last pic shows Megs with some of the other Transmetals I worked on.