Ceiling paint sheen options...
 

Looking for some tips on ceiling paint sheen. I'm painting an entire house for my parents retirement house renovation. I have about half the rooms painted, all the rooms my mom wanted same color on walls and ceiling except living room is white ceiling with white crown molding. The white ceiling I planned and bought flat ceiling paint...that should have tipped me off that all ceilings are suppose to be flat (as I've now been told). I've been using satin on the walls and ceiling in the other rooms (actually bought semi-gloss by accident in two rooms). One of the colors she picked was a Benjamin Moore which when I went to get I got a bit of a lesson from the nice guy about how the ceiling should be flat...I hadn't thought of that with the colored ceiling rooms.
Question is should I really be buying another gallon of each of these colors in flat to do the ceilings? How noticable will this be to the overall look of the house?

Thanks for any tips or suggestions.

The flat ceiling paint absorbs light, so you get less glare. It also hides imprefections better. You can leave it as is and always come back to re-paint if it becomes a issue,

Ceiling paint sheet
 

I painted colored ceilings in most of the rooms of my house and I used satin. I think it is a personal preference versus a "must do" type of thing. We have tall ceilings painted in dark colors so the extra light bouncing from the satin paint is a plus for us.

Flat is the norm

Gloss paint is not "your friend", especially if you have a lot of "critical lighting" (bright sunlight or artificial) on walls or ceilings unless steps are taken to bring them to a "level 5" finish. Finished joints, nail spots, and imperfections will be much more noticeable....