G1 toy colors without translucent parts would have been my first choice. Then try to do up some of the other TMs - like Barrel Roller for the Orion Pax from the 2-pack, Fracas... Marvel colors Krunix (shades of purple). After that, browse for any other characters that would work as Targetmasters (Be a goof and suggest Treadshot and Browning? MAYbe. non-BW Stampy and Break? I'd look into it).
SG would be last on my list, but I wouldn't say no.