You guys may already know about Ravefinity and their contribution to themes/icons. In past there was theme and icon suite called Bisigi, it was awesome project but not maintained anymore I was quite disappointed because the Bisigi project was not maintained anymore and nobody was willing to continue this project, but Bisigi is still compatible with one desktop called "MATE" because Mate is based on Gnome 2 and this project is designed for Gnome 2. I am trying to say Linux is great operating system, if somebody leaves others come and fill up the empty space, like many other great artists Ravefinity is doing great work by contributing his work on themes and icons, we wish them best of luck for future work.