My RV corian countertop has a blue stripe on the edge. I want to cover or change the color of the stripe. I was thinking of trimming the edge with wood, but would I be able to screw into the countertop or would glue be better? Also, could I paint over the blue stripe? Thank you!

Router the edge off, get a piece of oak, stain it, use contact cement or epoxy and run some short 18 gauge brads, with a nailer, into the Corian. PS Paint won't stick.

and run some short 18 gauge brads, with a nailer, into the Corian.

No, Brian, no.
Corian will not expand. Nail will bust it


Epoxy it on. If you must use mechanical fasteners, hold the wood trim in place, drill small pilot holds, remove wood trim, drill out pilot holes in the Corian and insert small plastic anchors. Counter sink pilot holes in wood trim, fasten trim to Corian with epoxy and insert small brass or stainless steel wood screws.

Simply epoxying the wood trim would probably be sufficient.