Hey Tippy, I burn a lot of candles, although I've never owned white ones I'd still say that what spats is recommending would be the best. I burn mine for a long time so they naturally get the wax droplets, and it really does give them a far more creepy, yet romantically gothic appearance. Being white though, some of the other ideas sound fantastic as far as making them appear creepier on a darker level. Let us know how it works out for you