Not a direct response, but in the case of modern automotive paints, especially 2 part urethane or epoxy ones it is exactly right - they're even based on the sam

Not a direct response, but in the case of modern automotive paints, especially 2 part urethane or epoxy ones it is exactly right - they're even based on the same chemicals! Of course, that doesn't really mean that paints work as glues, but you can add pigment/dye to a lot of glues and get a workable paint. (workable in the sense that they will adhere and color. they may not have the consistency that makes them work well as a paint).