<<<I do use coleman's white gas. And if it's too hot, basically I'm extinguishing the flame with it's own vapors inside my mouth, right? >>>

Correct.

You could use Ultrapure, or maybe try a mixture of Ultrapure and Coleman's. Personally, I would cut down my wick size to a smaller head that does not retain so much heat. If you're doing a lot of vapor tricks and/or body skin contact tricks, It's likely that the lamp oil will make that difficult, painfull, blistery or impossible.

You could also try using a larger reservoir of white gas for dipping them. I would imagine that a small container would get warm after a dip or two, compounding the problem as the temperature of the fuel increased with every dip of the torch. You could refrigerate your fuel. find two metal bowls that nest within each other. nest the bowls and freeze water between them creating a small freezer for your fuel. Basically a jacket of ice between the inner and outer bowl. It would keep the fuel at 32 degrees F as long as there was still ice there.

You might consider making torches using different wicking material. Experiment a little with torch design. I'm seeing more torches made by winding kevlar rope in different layers and configurations versus using flat kevlar tape these days.