I haven't had that problem with my UD eyeshadows, but I'm lucky my bathroom has a window, so I can get some natural light in there. I may go buy one of those lighted mirrors, anyway. I have been wanting one for a long time! I'll have to remember to check my eyeshadow in different lighting when I'm away from home!

One thing I have noticed is that no matter how my skin looks (without makeup) at home, at work, anywhere indoors, when I look at it in the mirror in my car it's AWFUL! On the plus side, I have actually plucked my eyebrows in the car once or twice, because the light in there somehow shows up all kind of little hairs I can't see anywhere else. I have to hope that if I can't see it anywhere but in the car, maybe no one else will either!


ETA: It JUST occurred to me that yellow and purple are opposites on the color wheel, so if your bathroom lighting is yellow, and you were using purple shadow, the lighting probably neutralized the shadow color a bit! Have you had that problem with any other colors?