I saw the prettiest colors today.
I'd heard enough warnings about how oddly polarized sunglasses interact with faceshields. I also tend to buy cheap sunglasses because I'm very good at leaving them on the rear seat as I pull out of the parking lot.
I bought a new pair of -gasp- $20 sunglasses. I made sure they weren't marked "polarized". But they were. Looking through the new glasses and the faceshield revealed a distracting world of rainbows and spacial ambiguity.
The glasses go back tomorrow (REI).
Just another data point and warning.