A silly thought suppose, but the first thing that popped into my mind was that ‘white’ is many colors.
"White light is the name given to what the human eye sees when all the colors that make up the
visible light spectrum are combined. The visible light spectrum is made up of red, orange, yellow, green, blue, indigo, and violet light. When white light is shined through a
prism, it is broken into these separate colors of the visible light spectrum. Most people commonly refer to white light simply as “light.”’
wisegeek.com/what-is-white-light.htm
I believe that fire is a symbolism accepted by many cultures, as are food and drink (bread and wine) oil, and so on.
Jesus Himself, and the first Apostles weren’t ‘white’, but from an ancient Near Eastern race
en.wikipedia.org/wiki/Jews
The symbols and rituals came from this ancient world. Therefore, while the symbols, rituals and the candles may be perceived as ‘white’, their origin is not.