Zukitwo is a theme made by Lassekongo83 and Zagortenay333 on Deviantart and GNOME-Look. It received great reception from members of those sites. It has become apparent now that it is abandoned, so I(Gunvolt-linux) decided to start updating it for new GTK versions. I am a novice, so I might need a little help.
Somebody named George-Mironov forked Zukitwo on GitHub and updated it for GTK 3.16. It is no longer there, and was removed in favor of his version of Zukitre (which is sad because I hate Zukitre: too flat). I decided to upload it to GNOME-Look and Cinnamon-Spices along with Zagortenay333's cinnamon version. Someday I will update it to 3.18, and versions to come, so people can enjoy THE BEST theme ever.