Grayscale Ui Kit (Free PSD)

Happy sunday. Here's an *almost* grayscale UI kit. Do whatever you like, just don't sell it.

Fun with opacity. It's mostly black and white and/or shades of gray with varying opacities. There is a minimal use of color.

Check it out on various backgrounds:
http://rishabh.ca/Grayscale_UI_Animation.mp4

Icons:
Entypo: http://entypo.com/
Climaicons by Adam Whitcroft: http://dribbble.com/shots/544084-Climacons