I have questions about ground rules surrounding how to paint deep skylight wells, recessed alcoves and an irregular cathedral ceiling. Specifically:

1. Should deep skylight wells be painted the color of the walls (a popular greige) or left white?
2. In alcoves on either side of a floor to ceiling fireplace, should all sides of the alcove be painted, i.e., top, sides and back?
3. For an irregular cathedral ceiling, I’d like to share a photo of the ceiling lines to demostrate how I need help knowing when to leave the ceiling white and when to paint the greige color. If you’re open to my sending a photo, please let me know.