Flattice theme is based on Flatts theme, it is modified by vinceliuice from gnome-look.org site. It is simple and flat designed to make desktop clean and beautiful. It has themes for Gtk3, Gtk2, Metacity, Unity, Xfwm4.
FlatBird theme is flat and clean, it is designed for Unity, Gnome, Xfce, and Openbox desktop. There are two versions of this theme flat-borders and round-borders. These themes are tested in Ubuntu 14.04 Trusty/13.10 Saucy.
You can use Unity Tweak ToolGnome-tweak-tool or Ubuntu-Tweak to change themes.
Flattice Theme
flattice

flattice

FlatBird Themes
flatbird

flatbird

flatbird

>> Available for Ubuntu 14.04 Trusty/14.10/13.10 Saucy/Linux Mint 17/16/and other related derivatives
To install Flattice Theme in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

To install FlatBird Theme in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:
That's it
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