painting the chassis!!

[kev s3]

the restoration is progressing well,welder next week and then sand blasting,and i was having a think about painting the chassis.it will be coated with por 15 first but i was thinking of finishing it with a funky colour and was wondering if say normal car spray paint would put up with all the stuff that is thrown at the chassis. the por stuff is hard as a rock and inhibits rust but is u.v. sensitive.their topcoat only seems to come in black and i was'nt too keen on this.so i was looking for another product(cant be hammerite,reacts with por)as a finish.any thoughts?
cheers