Color trends and schemes may come and go, but there are certain things that will ALWAYS work – white trim and white ceilings. As we emerge from the cloud of tough economic times, people are ready to do things again, and that includes home improvements and painting. There are so many opinions about choosing paint colors: Pinterest, Houzz, blogs and, of course, the well-meaning friends and relatives. I see this on a daily basis as an iPhone is thrust in my face to identify the color in a room picture. Many people can get that "color" figured out, but then "What to do With the Ceiling???"
Depending on the color, you can always do a lighter shade of it on the ceiling to make the crown moulding "pop." That gives you a little color, and doesn't make the room too dark and "cavey." This is acceptable and works, but note depending on the eventual wall color. If the wall color is a red, and you lighten it for the ceiling, it will be pink. (Yikes)
Or you can do white or Decorator White, Simply White, White Dove the list goes on and on of all of the shades of whites. These will all appear white when painted, they all have a slight difference when compared to each other. It won't be noticeable, unless you are matching an existing white and continuing a previously painted ceiling. You can do the same color as the trim, just in a flat finish, to get a subtle tone-on-tone look. White is a clean look, that can brighten up the space. A white ceiling will really accentuate the wall color, that you struggled so hard with. So don't be afraid of white, it's always in style.