But this isn’t the case.
The same effect as using different coloured candles can be achieved by simply tying a length of the appropriate coloured ribbon around a plain beeswax candle.
So: for a red candle, tie a length of red ribbon; for a blue candle, tie blue ribbon and so on.
Cheap ribbon can be found at most craft stores. And ribbon can be purified in rain water, hung out to dry in the sun, and re-used over and over.
This is a great alternative for saving money on spellwork that requires different coloured candles, when you don’t have a lot of $$$ to spend!