Bowling Balls are made from rubber, urethane, plastic, reactive resin (solid, particle, or pearl) or a combination of these materials so the paint would have to work on these types of surfaces.
I would imagine you’re probably turning an old bowling ball into a garden gazing ball, or something of that nature, am I right? I didn’t think you wanted to paint a ball and then bowl with it.
I’d suggest taking a harsh brillo type pad or sandpaper and roughing up the exterior of the ball first. You can use a simple wood putty to fill in the fingerholes. As for painting, I’d even go as far as using a primer on the ball first before using any type of paint. After the primer, I think you’d be able to use most paints of your choice.
Here’s a link at DIY about turning a Bowling ball into a mosaic ball. Not exactly what I think you may be looking for, but may help somewhat.
http://www.diynetwork.com/diy/cr_garden_patio/article/0,2025,DIY_13757_2273950,00.html
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