Hi BohemianGirl! Welcome to the website!
I think when you find
your Boler,
it will tell you whether and how you can
paint it.
I mean, if you come across a deal-you-can't-refuse on a Boler in pristine, mint condition, you might feel like continuing to preserve it... On the other hand, if your deal is for a Boler that's seen better days and needs a whole, complete makeover, go for it.