Spraying plastics isn't optimal but I've had decent luck with Krylon Fusion paint and LOTS of prep work.
I've painted both of my blasters and they turned out decent. My '93 has been painted for a year with several trips to busco beach and lotsa trail riding around here and it's not really scratched or faded.
No paint likes fuel spilled on it but that's the price to be paid to cover your plastics in a color you find more to your liking.
Perhaps you could pick the plastic color you would prefer and then try to trade your current plastic color to someone who has the plastic color you want.
I have yet to see painted quad plastics that hold up well. they can be done very well in the beggining but if they suffer bumps and scrapes they go to sh*t quick. I heard the plastic is oil impegneted to reduce staining or something?