Installer for the Metro for Steam skin for Steam (http://metroforsteam.com), currently being very alpha. Feel free to clone and compile it. That's what the MetroInstaller.sln file is for.
As the opening paragraph says: open MetroInstaller.sln with Visual Studio (I used the 2013 Express version), compile it, have fun.
Here you go: http://dl.riditt.de/MetroInstaller.exe
This whole thing is provided "as is", I'm not responsible for data loss, harm done to your pets or random death encounters in your personal life. You use this at your own risk.
I'm in no way proud of this thing here and I probably won't improve it as long as all the features work. Thank you for your understanding.