You're right Eddie, this is a great thread and I will move it to the Gear board for future reference.
Per the colors, everyone sees things differently so it pays to experiment and think thru what's best for one's own perception nuances. To your point I spoke with Peter Crow of Action Optics recently and he advises that copper is the best all around choice for most retinas. He is also an avid angler, go figure
I think it would be a great resource if we could get a manufacturer to offer a variety of colors for us to evaluate 'in the field' in exchange for such feedback - even more than we touched upon here. By being enthusiastic about such topics, these possibilities can become real. I think that would be a good return on our investment here, and all we need to do is keep talkin'!