I used some Sharpie on the Combiner Wars Shockwave I got yesterday. I don't know if it looks good yet (or even like Shockblast, aside from being slightly greener and bulky), but I think it looks better than the flat grey he was before. I'll probably give the purple on his collar another coat. I don't want to try to pop his head off the ball joint, especially since there's some definite tightening in his arms. I similarly don't really want to do his legs, as it lends some continuity to his abs. For the altmode I made his reticle purple on the front and his kneecap lasers are now purple too. I started with his feet, intending to silver up the grey parts, but the silver Sharpie doesn't really alter the color too much. Some purple-on-silver helps with the fins in gun mode.