Applying a gold pinstriping might take longer than just repainting the whole ceiling. People tend to avoid painting their ceilings, and often a fresh coat of paint up there makes a visible difference.

If your ceiling is white, most likely it was painted with a color called "ceiling white" that the painter bought at the closest paint store to the house.

My Mom painted an accent wall in her living room, and framed the wall with quarter-round, painted with the wall color. She didn't have to get right up to the edge of the popcorn ceiling or the walls when painting, minimizing the risk of getting anything on the adjacent surfaces.