have you guys ever gone and set fire to a open cylinder of rubbing alcohol? the flame is invisible! but its there because you can see the heat waves just above the shadow of the cylinder.. i wonder how it would look if you mixed the rubbing alcohol with acetone and then set fire to that. heheheheheheehee!
dude u no what is the coooolest flame that i found out in the anarchy chemical cookbook is hand sanitizer with 45% akahol(forgot how to spell) and it has a perfect blend of water and akahol and , so it will last a long time. the flame will be blue when it is lit....so get a shit load of hand sanitizer and put in one big azz pile and lite it and their will be a big azz flame of blue....