Flat light sucks. Nothing will solve that issue, but I personally have tried a few different brands with light yellows and pinks, and prefer my smith iox blue sensor mirror for flat light days. Best of luck.
I'm right there with ridinbend. Clear would be the best I guess, but I have blue lagoon on my Anon googles and they work decent. I ride a lot at night here in Indiana and that lens works for me as a good all around lens. I didn't like the yellow and pinks that I have tried.