I'm sure that camouflage can help a great deal in some situations, but it's not necessary for hunting mountain game. Typically, you still stick out like a sore thumb in the alpine, even when covered in camo. Old-fashioned field craft is much more important in stalking alpine game. It doesn't matter how cool you look, if you hunt well, you'll be successful. If you mess up, they will see you. If you can let go of the idea of camouflage, you can find some great clothing without the designer price. Although I typically like to pick out earth tones, you could probably get away with wearing neon as long as you hunt smart: staying off the skyline, using terrain features to break up your outline, and playing the wind.