Influx is a single theme with 4 unique skins, all of which can be changed on the fly right from the wp-admin control panel. The 4 skins, Default, Grunge, Subtlety, and Oceanic, are each geared towards a different potential audience, which makes Influx a very diverse and capable design.

Preview:
http://www.elegantthemes.com/preview/Influx/
Download:
http://megaupper.com/files/IESVLJZM/InfluxTheme_1.zip
http://www.mirrorzian.com/files/1LKZW2LP/
http://www.mirrorcreator.com/files/14PKOOL0/InfluxTheme_0.zip_links