The color and the gloss is a byproduct of the type of powder you use. It has nothing to do with the process. The process is pretty much always the same.
Clean the parts, sandblasting is a good way to do this or stripping. Pretty much anyway that's acceptable for liquid painting is acceptable for powder coating. You then apply the powder with a special "powder" gun and then bake for 20-30 minutes at 325-350 degrees F.
As milo said if your parts can't take 325-350 degrees F for 20-30 minutes then powder coating is not for those parts.