you cant strip the bowl of its colors. buy clear pieces. and second. cleaning your piece. the cool part about the colors in your piece is that as the resin builds up on the inside the glass changes colors making the bowl look cooler. it may take a while, and just look dirty at first but its really cool and worth it.

if your that concerned with cleanliness then just clean it after the color shows. its not that necessary to clean it after every use is it. is the taste really that different?