Sunglasses Mode = Complete Gray Green mask over your game screen session cutting down the current lumen factor appropriately. The gunsight reflector plate in the F4U-1A is a good preview of what it should be like.
Then at 12 noon your gamma control along with a dominant gray green tint to everything should be reduced to about 3 to 4 pm game light equivalent. Along with all of the loss of ability to discern your target from the ground clutter or ocean without the aid of Full Zoom. Some of the same problems looking through the F4U reflector plate.
You can get another preview of this by upping the blue factor at your desktop color control, then in game reducing your gamma a few points.
