John Burbidge has aimed his brush, roller, and spray gun at everything from ritzy mansions to trashy trailers. He's gone underground to paint sewage-treatment plants and risked death to paint factory ceilings. He has no doubt inhaled enough noxious dust and paint fumes to shorten his life. But he's not dead yet. And the captivating characters he has encountered along the way have more than offset the toils of painting for a living. Ex-cons,...