Re: A purple tower?
Auto or engine paints cling rather well but do take some prep work. You have to take the nose off as well as any rubber and plastic parts. Then scuff it up and tack it off. Coat of primer, sand it, another coat of primer, sand it, then several coats of paint, sanding in between. LOTS OF WORK.
If it was me I'd take it to a body shop and get a quote on letting them do all the work. Tell them you'll recommend them on line when the work is done and you're happy with it. I'd get real fine metal flake with a clear finish. Clear coat is too easy to muck up so get a clear acrylic finish that can stand up to a little abuse.