Yosembience Theme is a perfect balance between Ultra Flat Themes for Ubuntu and Yosemite for Apple.
Added together with Numix Circle Icons and a beautiful color matching Flat Vector Wallpaper.
The results are amazing to say the least.
Below are the details you will need to install this beautiful Theme Set.
You can download Yosembience Theme directly from the Ubuntu Alive Dropbox below.
To install Numix Circle Icons please use the PPA method below.
sudo apt-add-repository ppa:numix/ppa
sudo apt-get update
sudo apt-get install numix-icon-theme-circle
The Wallpaper is called Puddle Jumper and Puddle Jumper comes in 6 different color schemes that can be seen at Charlie Hensons Gallery on DeviantArt below.