With custom ironsights, especially with bright ones, it looks kinda silly when you're in dark dark dark tunnel, and your gun's so bright that angels even could come blind. So, I dunno if this is possible, but when the player's in shadows, the ironsights could go darker. Seconded suggestion, enjoy discussing.

Shouldn't they be dark all the time? :P

I was talking about the custom ironsights, which usually are bright. Seconded suggestion, anyways.

Well, you can always darken them. Nothing keeps you.

The ironsights is a .BMP
you can code the picture to go darker when you're in shadows. and there's no shadows in AoS.

lol