The yellow-tinted glasses described by Georgiansilver are used for shooting over iron sights, specifically because of their ability to enhance image definition. The excessively expensive type called Serengeti Drivers have some of that capability, but with a more intense tint so I would not advise wearing them in heavy rain.

The range of tints approved for aviation is carefully selected to prevent skewing of colour vision so the pilot does not misinterpret indications from the instrument panel. The colours are in the grey-to-green continuum.