The one topic I've written about on my blog that gets attention from thousands of decor happy readers is decorating small spaces. I think that is because rooms and homes today are smaller than they once were. People living in condos or apartments must be conscious of using every trick in the book to enlarge their living spaces. So stay awhile and see how colour can solve some of your small space dilemmas. Perhaps in these suggestions you will find a treatment for your small space.
Use one colour everywhere
This might seem like an extreme solution but it isn't really. Using one colour all over a room makes the different planes blend together to give a more unified look. You can even use the same colour on the floor and ceiling if you wish. Since your eye continues to move freely around the room you have no sense of the boundaries of it.
If I could change one thing about this room above, I would paint the trim a soft pink too to keep the eye moving. Painting trim white creates vertical and horizontal lines that your eyes automatically go to and follow. You can see the difference in the room below where the trim is painted out. The room has an unbroken field of colour that is certainly expansive even though a dark colour was used.
More blue, but the trim is painted a coordinating colour that is closer in value to the walls decreasing the emphasis on the trim which seems to just blend in.