I recently bought a Corsair K90 and replaced the WASD caps before I even plunged it in. These caps are a transparent white when unlit and will glow with whatever color they are back lit with. And because I swapped them right out of the they are in perfect condition.
Sorry about the non click-able links this is my first post.
Unlit: i.imgur.com/Qf9yQ .jpg
Lit: i.imgur.com/xjozD.jpg
How they will look with blue LED's: i.imgur.com/5OIIX.jpg
I'm looking for blank transparent keys, novelty keys, cool arrow keys, or a transparent space bar. I'm open to any offer though.