Hi @rpdp_hd,
Mine are black… The funny thing is that I didn’t notice there were two different models till you said “black version”…
The firmware I have been using from the beginning is this one
To upload the firmware I use the “ESP8266_flasher”, you can find it here (Just follow the instructions):
http://www.xess.com/blog/esp8266-reflash/
The sketch is this:
Hope it helps!