As a person who recently re-arranged her closet (for the umpteen-millionth time) and Really enjoyed putting it in Roy G Biv order, I am appealed to the thought of opening your closet and finding everything in one color. It seems calming doesn't it? and easy. But would it really be easy to wear the same color all the time? Hmm, I can't decide. Anyway there is a lovely little article on 5 people who sport the monochromatic here.