???

will always be tying a fluoro leader

If you are using a Fluoro leader than I'd say no.

I dont think so. I use Power pro in green and red. My buddy swears by yellow. In both cases we are using fluorocarbon so the fish never see it.

If you watch your line it might. My sunglasses are pretty dark tinted and with 10/2 PP Green the line gets difficult to see.

I use it for visability so white and hi vis yellow are my colors with or without a leader.

I don't the the fish care one way or the other. I use green PP and mostly fish in the dark, no problems for me. I do have 1 reel I use offshore with yellow PP for daytime use, I just like the way it looks on the reel.

Whatever color looks best on your combo.

If you're line watching, swipe 1/2 the spool with a black marker. It's gives the line a breakup pattern, and you can easily see line movement.