Some people think that this is the best dark theme :)
Important Note: Only for use with new Theme Engine and CyanogenMod 12/13. If you don't understand these terms, this application is not for you.
Theme is compatible with CM13/CM12.x
Works best with xxhdpi/xhdpi screen resolutions.
Additional links:
LessUgly Original: https://play.google.com/store/apps/details?id=com.lex.theme.lessugly.cm12
Cryten Icon Pack: http://goo.gl/FpMvE6
New wallpaper by Eric Rösch. More of his work can be seen here: http://goo.gl/n8oj71
Old Wallpaper by Adrian Petrisor: http://goo.gl/yPizNS
p.s. This is not the best theme. Just less ugly than others.