For me with warmwater topwater flies, the colors are for me to see. The bass and sunfish don't seem to care what color they are. I have seen that the brighter colors work best during bright conditions and darker colors during overcast/dark conditions.

Anything I use subsurface is predominantly brown or olive with the exception of chartreuse, don't know why chartreuse works so well but it does! I do try to incorporate red into just about every bass/sunfish fly, you know everyone says that predators key in on red. I don't know if it really works but it hasn't hurt.

I'm going to tie topwater some patterns for this year that are dark but incorporate some glow in the dark material on top for me to see at night.

Just my two cents worth;

Wayneb