Hello, Does anyone know of a chip that would be compatible with this library

Hello, Does anyone know of a chip that would be compatible with this library and does RGBW instead of RGB only. Not an LED with build in chip but a driver chip only such as the ws2811https://www.adafruit.com/products/1378

As far as I know, RGBW is not supported by the FastLED library yet. Based on some posts I have read by @Daniel_Garcia , it seems like it is on the todo list, but requires considerable reworking of the underlying code base to execute RGBW. Here is a link to RGBW convos on the FastLED g+ group: https://plus.google.com/u/0/communities/109127054924227823508/s/RGBW