Here's a kit that allows you to upgrade your Hegemon to have nicely sculpted leg covers. There's no longer a need to paint the clear plastic on the back of his legs black, buy these instead to get a G1 look!
I recommend 'polished white strong and flexible' with some light sanding.
Ensure the parts are well cleaned and free of powder!
Mask the attachment points and spray with fast-drying grey primer.
Next, paint with a semi-gloss black, fast-drying spray paint like Krylon.
Finally, mask the 'ankle cuffs' using painters tape and spray with a medium metallic silver. Finish off the ankle ports with a small black detail on top using either offcuts from labels or a black paint marker.