Ubuntu Precise Pangolin by half-left
This is a GNOME Shell theme based on the look of Ubuntu 12.04 Precise Pangolin. The latest release that was 4 months ago and brought greater accuracy in the colors and styling, while also some important fixes. It looks like an official Ubuntu theme for Gnome Shell. Very good in every aspect.
Ubuntu Precise Pangolin Radiance by half-left
This is the Radience version of the precise pangolin theme by the same artist.
Ubuntu PP Ambiance 2 by AKLP
This is a modification work based on half-left’s theme that aims to bring more precision and Ubuntu feel. There is a lot of .svg redesign and some little optical effects additions.