What makes SHINGELS sparkel ceilings. I was so happy to find this – largest roofing manufacturers do not use mica or glass, as it makes color matching harder. The granules are painted, I painted it himself. This is done to ensure same colors ot the right color or it is the number one industry complaints cause. Bright bits that you see when you look at a normal roof shingles is the reflection of the sun of the pellets are put on it. The granules are also coated with one type of oil, depending on the granule provider, to make it water repellent.