Is candle a metal?

No, a candle is not a metal in the traditional sense of the word! however, candles that are colored often have some form of metal that makes up the color - cobalt creates a blue, copper creates an array from orange to green, and so on! you can always use natural elements/plants to produce colors as well as create scents that can be added to the molten candle wax! the lavender flower not only creates a beautiful purple-blue, but has a fragrance that is both relaxing sweet smelling!