Although I read the post on the how to on dying plastics, I still have some concerns. Is acetone really necessary for dying plastic parts? The provided videos didn't show any use of the chemical. Can acetone itself melt plastic? I know it's an ingredient in solvents. I ask this as this will be my first time attempting plastic dying and I'm trying understand what was put before me. Basically I want to dye 75% of this piece(s) from my Masterpiece Optimus Prime... into this color of blue. I tried painting, but as the piece is in such a tight place, the paint naturally scraped off when I tried put it in place. I'm been trying to think of available blue shades would make the matching color. All I can come up with via the official Rit website is some royal blue and a little bit of violet. Has there been a video put out of somebody dying grey plastics, blue? How am I suppose to use a color wheel in this kind of situation? Could that particular plastic withstand 150-170 degrees water? Since I'm only going be able to do this once. My apologizes if these are bad questions.