Nexus OutlinedX Icons Part 1

Here's a follow up on my previously posted shot: https://dribbble.com/shots/1455062-Android-Homescreen-Holo-UI?list=users&offset=6
See attached full-size mockup!

This time I've done the app launcher's categories and iconsets. I actually run a version of this config (white icons) on my own Nexus 5 now and it does stand out from the crowd, and the legibility of the icons in bright sunlight is really good :)

I draw all icons in the same line weight and placed them inside circles to make a unified look, except for in the dock where the icons are without the circle to differentiate them.