We have creative transitions, lol. My loft is blue - really the color of the windows bottom menu bar blue. We carried it down the stairs and to the corner of the wall at the foot of the stairs. It's visible from the hall, which is pale yellow but not from the front door. From the front door, all the following are visible. The diningroom is pale yellow - the livingroom has one red wall and the rest are oatmeal color. Sounds odd, but doesn't look it at all. There's no real "doorways" to break up the color. they just end at wall intersections.
There is a doorway (no woodwork) between the diningroom and kitchen. The kitchen has a different kind of flooring, and is apricot and oak with green trim. You can see into it from the diningroom.