Neopixels on MDBT42Q: are R and G switched?

I just tried to test a recently bought Neopixel RGB LED matrix. Since first experiments with an obniz board could test up to 85 LEDs only (but they were working fine), I though it might be a good idea to reactivate a MDBT42Q (after a firmware update to 2v10).

A very first attempt

let Neopixel = require("neopixel")
Neopixel.write(D22, [255,0,0])

showed a green(!) pixel - and

let Neopixel = require("neopixel")
Neopixel.write(D22, [0,255,0])

turned it red(!) - blue seems to be fine.

Are "R" and "G" just switched? That would sound strange...