Rev-Ed to do this
About WS2812
A 08M2 at 32 MHz can easily bit-bang a thread of WS2812B's. The timing is not very critical, except for the short <400nSec high time on the logical "1".
It is true that strings of (neo-) pixels start eating up a lot of memory, 3 bytes per pixel, and memory is not very abundant in pixaxes (the smaller ones especially).
It is strange however that Rev-Ed did not recognize this need. Especially in education, it is very simple and eye catching to offer RGB color LED support.
And you can do great things with a small 8pin package.....
I would not be surprised that in the next firmware version they add support.
It is simply not very difficult to add it. Only you need the speed of assembler, in combination with 32MHz clock while driving the WS281B2's.
Once done you can revert back to the energy efficient 4MHz clock.
Volhout
APA102 - Easily controlled directly from any PICAXE.
WS2801 / WS2803 - Directly controllable by a fast enough PICAXE with appropriate code.
WS2811 / WS2812 / WS2812B / APA104 - Not controllable by PICAXE.
HL1606 / LPD8803 / LPD8806 - Uncertain
SK6812 / TM1804 / D7001 - Unknown
I am planning on creating a summary so it's all in one place which can be linked to and updated for future controller devices.