Passing through

Hello. First off, I know nothing about candles. Second the girl and I are planning a wedding. She wanted to do the lighting of the candles bit, but I thought it was too cliche. So I want to re-invent it, if possible. I would like to pour two different colored waxes together, and in my little mind they would join to form a new third color. A candle that we would light on anniversaries. Thought that we could keep the wax in kettles on a mini camp stove out of sight. Is this even possible? Or should I start finding reasons to not do the traditional sand thing either? If this is possible Im open to all kinds of ideas, provided the colors change. Not interested in the ice in the candle to cool it. Im a patient guy.