Arduino 1.6 has been released - over the next couple of days I will be grabbing it and testing it with various components of the library. If you are using Arduino 1.6 and the most recent version of FastLED3.1 and run into issues, please enter them into the issue tracker - http://fastled.io/issues (but please, provide more info than “it doesn’t work” - let me know what OS, version of arduino, version of the library you have, what hardware you are compiling for, and what leds you are using. Massive bonus points for also including code.
WS2812 colours seem correct building for an Uno.
Commit 95817e8a71