i have alot of pad crashers and i have been using the black the most so i took a marker and made some of the green frogs with white bottoms into black bottoms. I have been told to use white bottom on sunny days and black on darker cloudy days and into the evening. Anyone go by this or do ya just throw any color anytime?

Black sharpie will turn into (It's actually it all along) purple.

Well, I only have two colors of Pad Crasher, leopard and cricket. So I just throw either of those in any situation. I do have an Academy store brand black frog. But it feels much harder than the Booyahs. Thus, I don't ever use it.

You can draw stripes and patterns, eyes, whatever you want. 

Color choice based on sunny vs cloudy has literally never mattered for me.

I don't second guess myself because I always throw a black frog no matter what the conditions are.