[Hawiian Cadder]

i agree with everyone else that the cartoon lighting and the actual lightning clash.

also, i don't know if you can do this but if you make the areas that you want to be a third color out of a bunch of tiny black dots, it will look gray, without actually requiring a third color. if you do do this i would make the third color the shadow of the text, from the light source of the lightning, that would make it look really cool.