For those that like the lighter skins, its not perfect but will do until the full release comes out and then we can see whats really what.
Download and unzip the file, it will have a folder called skins in there, just put that skins folder into Documents\Sports Interactive\Football Manager 2015
So it looks like Documents\Sports Interactive\Football Manager 2015\skins
Then in the game you can choose either of 2 skins. One will be the dark
skin with some of Daz's extras and my extras plus some items borrowed from the Scorpio Omega
Skin.
The other
skin is the FM Alternative
skin which is the light one previewed at the top.
There are some issues still with the skins, but you can use them even as a work in progress.
http://www.mediafire.com/download/dyhiy5gy9lly1aq/skins.zip