Illumination by Daniel Parnell
This one looks really snazzy
. It claims to be a true theme system for Windows
, with freeform
skins and eventually every feature WindowBlinds
has. Oh, and it's open source as well. Development is coming along well, it was updated just recently at the end of June.
Also see WindowBlinds, eFX, Chroma, CustomEyes, Daya.