Correct me if I’m wrong, but don’t transparent pigments only change light color by allowing certain wavelengths of light to pass through them? That would mean the glaze in question here is only changing the color of the light by blocking out a majority of the light to make the distribution more uniform. These pigments can’t actually change the wavelength of light emitted. That would mean this is making the LED way less efficient (in terms of lumens per watt), but I do applaud the low cost thinking!