Categories now actually color-coded

Hi, all. Community categories are now color coded.

Green: Getting Started and General

Orange: All hardware/software categories for discussion / bugs

Red: Trouble! Troubleshooting and Meta (trouble with forums)

Purple: Tutorials, Project Shares

Blue: Product Creation and Kickstarter

Cyan: Particle channels-- places where Particle posts but everyone can view

Let me know if this is disruptive to your workflow.