Something similar happened to be... but worse. I was working on a custom deco for siege prowl, dipped the legs in alcohol and the left leg shattered into 100 pieces.
What brand of Vinyl dye do you recommend? I learned my lesson about alcohol and clear plastic a long time ago when I was attempting to make a custom fort max from a unicron. I stuck the skirt pieces in a jar filled with 98% ipa and they crumbled to dust.