Hi,
I built a prototype for a WiFi controllable LED light, using the popular ESP8266 module running the NodeMCU firmware [1]. To allow controlling the WS2812B LEDs from Lua, I extended the firmware with a bit of C code [2]
The YouTube video shows it in action: http://youtu.be/oTnsXuxRcE8
Please find all necessary files attached.
Have fun,
Markus
[1] https://github.com/nodemcu/nodemcu-firmware
[2] http://www.esp8266.com/viewtopic.php?f=21&t=1143
For more detail: WiFi LED Light (ESP8266 + WS2812B + Lua)