Birdy
Cowboy Bebop
Dragonball
Flame of Recca
Gundam Wing
Hunter x Hunter
Inuyasha
Mononoke Hime
Oddments
Outlaw Star
Ranma 1/2
Rurouni Kenshin
Trigun
Yuu Yuu Hakusho
I think having the matching background really helps this cel. Notice how the background tint echos Gon's coloring.