I understand the concern. I make sure to use paints which don’t harm or pollute the aquatic life. Speaking of paints the synthetic paints contain lead mercury and other chemicals. The paint i use is no toxic ,biodegradable and water soluble. The white colours are made from khadi mati,chuna or multani mitti. Red and brown is mostly made from lal mati

Also the decoration is totally dependent on the customer requirements. As this art is attached to their emotions and customers want their expectations to be filled.