Controled burn colored fire and safety I am a martial artist who uses fire weapons in my shows. I am wondering how I can get the flames to be different colors. 

I've done some research about it, and have found that the salts of some metals can be used for the intended purpose (for instance, copper sulphate burns green). 

However, I use kerosene as my fuel and am wondering if it is advisable to mix the chemicals with it (kerosene) without burning myself. Also, I would like to know how to obtain the chemicals and what amounts should be added to a given volume of fuel.
I've done some research about it, and have found that the salts of some metals can be used for the intended purpose (for instance, copper sulphate burns green).


You're right! Various melts salts are known to colourize a flame. In the lab and/or for demonstration purposes, this is typically achieved by holding a magnesium oxide stick with a bit of the salt attached into the flame of a Bunsen Burner. There's a wikipedia page on Flame tests that shows some possible effects.


  
    I use kerosene as my fuel[&hellip;]
  


Here's a problem. The salts you could use soluble in water, but insoluble in a solvent as unpolar as kerosene! Consequently, you might want to give a flammable, but more polar solvent a try.

Is it conceivable to change the flammable solvent used in your performances? I reckon that you might achieve the desired effect using ethanol or methanol. With respect to the toxicity of both solvents, I'd definitely try ethanol first!