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I use spray on acrylic called Plasti-dip. Works great, looks awesome, and if you don't want it anymore, you start a peel with a razor and then just pull it off. No need for heavy scraping or chicals to remove it.
I stopped using paint and just went with black contact paper. Tape it around the edges and you should be good to go. Just a thought. I personally just got tired of the mess.