While I'm a little too OCD to commit my entire closet to this (read: matching black velvet slimline hangers), I do have an industrial clothing rack in my entry that this would work perfectly on. The DIY is really simple: take basic wooden hangers, lightly sand if necessary, and spray paint. The more colors the merrier, and this would be a great way to unify a mismatched set.
For more pictures, along with the complete instructions, visit Design Love Fest.
(Image: Design Love Fest)