Those ceilings look awesome, and agreed on all fronts, that's exactly it.. I'm extremely OCD and really picky about my buildings, and I love building huge castles for fantasy and occult based characters.
military-esque compounds for my police/space ranger/spy family, or in Sulani what basically amounts to a wooden tribal compound over the water with docks and a lot of open walls since I designed them to be basically a cross between samoans and mandalorians...
So I use all these materials, wood and stone and concrete to build up these really huge houses.. which then all have the same canvas white ceilings that look entirely out of place.
Needless to say I never use tables with reflective surfaces anymore, but recently when I made a basement I noticed that when the sim was going down the stairs it basically looked like they were walking through a white void to get to the lower room and that's not ok >.>
I'm not asking for anything fancy (though those molded ceilings do look really awesome) just a ceiling that vaguely matches the rest of my building so it isn't so glaringly out of place