I'm color blind so they restrict me. It sucks, I can see the difference in green and red like everyone else I suppose, but the difference between white and green is tough. If I watch a beacon spin, dirty white is the green one to me. The test consists of them shooting the light gun at you in random seaquences one second bursts and you have to get them all right to lift the restriction. Kind of silly because the only time I'd get a white light would be on the ground meaning taxi back, not like I'm going to think hmmmm I wonder why they're shooting a light at me, it looks green guess I'll go, wonder why they didn't just say something? Or flying along and get a light from the tower and think hmmm a white light, he wants me to taxi to parking? Oh well, never seen a Fed after dark in my neck of the weeds, never saw one before dark either.