Of course all these paints, stains and dyes are made for the dying, end of the line, from substances that absorb certain incoming wavelength,
Energy, live photons' colours are different, mixing all wavelength, these light "colours "gives white, not shades of black.
reflect on that.
I remember in the late 1930s, the yellow of the star of David, by compulsion warn even outside the Camps.
Did Jw also have to wear their chosen triangle in public? dont think so.