For a hula popper white or black?

Black for sunny days, white for overcast.  I'd go with white if I can only get one. 

Bone 

You'd think fish only see the underside.  I use black, frog and shad.

White with a bit of orange.  I also like a clear spook for really sunny days or a very clear water.  Black if I happen to be throwing them at night or really muddy water.

2 hours ago, KP Duty said:

You'd think fish only see the underside.  I use black, frog and shad.

You'd think, but you could be wrong.  Take a lure and hold it directly over your head ,all you will see is the belly.  Hold it off to the side and above your head and you can see the sides and depending on the angle most of the lure as well.  I did this same experiment in a swimming pool with a lure, and I could easily see more than just the bottom of the lure.  I would assume as long as a bass is not directly under your top water they will be able to see more than just the bottom.  Does it matter?  Probably not.