Mountain biking can be segmented into three general applications—XC Trail, Freeride, and Downhill. XC riders are the most technical rider in mountain biking, so performance is their mantra. Freeride is more about an urban look mixed with some performance. If Downhill is your poison, then protection will top your list, so you'll probably need a goggle to fit your full face helmet.
Brown and rose tints enhance depth perception and color recognition of greens and browns, which is essential in keep your lines along tight trails.