I recently discovered that sunglasses are a must, as a fast downhill right after a mud crawl will send bits of mud flinging up at your face. The problem with my current sunglasses is that they are way far away from my face so they don't do to good of a job, they are much better than nothing, but when I'm going fast I still get a lot of wind on my eyes. I think I need to get closer fitting riding sunglasses but I'm wondering what colour would be the best, for differing light conditions and optimal trail view (i.e. contrast, glare etc)
I can't cite the source, but I've heard that amber lenses are pretty good for riding in overcast conditions. Maybe I should get those sunglasses where you can change the lenses.