I was lucky enough to get my hands on Netflix War for Cybertron Trilogy Soundwave in person, only to find that his knee had the strangest yellow mark. Tried erasing it, but it seemed to be something wrong with the plastic instead, so I took some red paint to the area to cover it up while mimicking the G1 toy's stickers... ...and the rest is history.
The little accents are great. Any thoughts about redoing the chest yellow with your shade from the little bits?