Paint on Plastic?

Hi I did a quick search and couldn’t find anything on this exact topic, if I missed one please lock this post and kindly point me in the right direction.

So here’s the thing, I have a request from someone to mod their SE stick. For a part of the mod they want a purple paint and suggested it to be spray painted. My question is, do I need any type of coating to protect the paint and what is best used with spray paint. Also would it be better to use some other kind of paint instead? Thanks.

Will this help?

much appreciated thanks!

Scroll down to see MoonChilde’s painting guide. Both regular paint method and a Vinyl Dye method.