Just in case anyone with the power to add a swatch is reading this.
Deleting and rebuilding the ceiling for some reason leaves it a greasy grey color, it does not revert to the original default white.
There is no way to revert back to the default ceiling once it has been changed.
mummum601 for a white ceiling swatch go into Floor and Ceiling Patterns>Stone and look for "Barely Concrete" it's the first choice in the 3rd row it has a white swatch that I use for pure white ceilings, select "Ceilings by Room" to apply it.
You don't delete the ceiling first as that will remove it. If you accidentally do delete it, select the room, choose the control to click Up while the room is selected, you'll see a yellow border that you need to click on to build the ceiling again.
