Insulators were cut into eight pie shaped sections. One original control color piece was kept. The other seven were heated in a kiln to an undisclosed temperature. One of each of the heated pieces kept out. The rest then subjected to UV light for varying lengths of times.
Stage four has been completed.
original, (CD121 WGMCo in Royal Purple)
heated+two weeks 24/7 UV lamps,
heated+four weeks 24/7 UV lamps.
Stage five will be heated plus two months UV.
Stage six and seven have not been decided.