ohhhhhhhhhh.......wax play *shivers* LOVE IT!
i can say that it is one of the things i have had the pleasure of experimenting with real time, and do have to agree with Sir_Russell about candles melting at different temps. For me personally, white candles, however *plain* bring the most enjoyment. The darker candles such as green and black were too painful to me and also left small burns in places.
As for creativity, i am of the mind that one can be as creative with wax as with body paint *grins* And to my neighbor sisterhoney61, i too have thought about making my own candles and not just for play. i just truly enjoy the ambiance candlelight can bring to any setting and have them burning in my house constantly.