first off I'm going to say that I found this to be the closest forum to post it on, etc.

if you're interested in burning your tag some place, reppin, or just painting something, then spraypaint is essential. the great thing about having a specific color is that if you're going for a specific one for a piece, then nobody else can nab that signature color. whatever.

the way you want to mix is to nab your two colors. you probably want the cans to be at least half empty before you mix.
fill your tub with hot water, stick one can in that, then put the other in the f*****. leave them there for 15-30 minutes, it depends on the paint and pull the two out.
what you want now is to nab something generally the size of a coffee straw, or one of those pointer straws that come in compressed air cans

usually those work for me, but you may want to break out the ink cart***** of the pen, whatever works size-wise (this also depends on the brand), and you'll need to connect them by that straw. what you do here is spray the hot can, the one that was in the water, into the cold one, and let heat rise.
if done properly, this works.

any flaws?