I've never been a real big "color" guy. I doubt it makes much of a difference. Last year I used mostly black. I figured black would stand out most to a fish looking up.
Then, when Holschlag ordered his, he asked for bright colors, mainly yellow and white. He agreed with me that color didn't matter too much to the fish. His logic for wanting brighter colors was to make it easier for the fisherman to see it. That makes sense to me. Also, with the amount of backlighting as a fish looks up at a topwater, probably anything looks black.
As a matter of fact, I just got up from the computer and did a little experiment. I turned all the lights off in the kitchen.
I faced the window (surface) from the darkened room (river bottom) and held a black Bug in one hand and a yellow Bug in the other. I held them both out towards the window, and due to the backlighting, there was very little difference. I guess that answers my question! Since they look pretty much the same to the fish, why not use a brighter bug to improve visibility?
In popper mode, I fish it with a pop and pause, pop and pause, varying the pause. Sometimes during the pause I shake the rod tip to impart a little quiver as it sits. To get the best pop, I point the rod tip towards the Bug, putting the tip almost in the water. A quick jerk/strip of the line makes a nice splashy pop.
In slider mode in slow water I sweep the rod a couple feet then stop and let the bug drift back towards the surface. I find that works better than trying to strip it in. In current, I let it get way dowstream of me and then slowly strip it back. The current keeps it a foot or so below the surface.