Cancel the painter appointment. It's ridiculous to expect to be happy with a choice you rushed into when you've spent a fair amount of time struggling with it. Not to mention the expense of having someone else do it with a color you aren't sure about. Stop buying gallons of paint. Sherwin Williams has quart samples for $5 and there is a coupon for buy 1, get 1 free. I'm sure you can have samples made up at several paint stores, as well. Ok, I'm assuming you are staying with the imperial yellow? I like it, it's bold and I had that color in the living room of my last home. My dining room was paper-bag brown with a metallic gold ceiling I did in a kind of starburst. A little moody, but that's what I like for a dining area. I used red accents to spice it up. Our den was a brick red that leaned toward a deep coral and it flowed off the yellow very well. Like parma said, you want to have similar saturation of color in order for them to play well together. My cousin has an orange entry, purple front room, yellow living area and the back wall is a turquoise. It is fairly open concept and everything flows wonderfully because she used colors with similar intensity.

Ath this point I think it may be awhile. After balmy temperatures for so long things have turned cold and damp, not a good combination for painting. I'm waiting for the new sidelights to come in and may just wait for them to complete the whole thing at once. In the meantime, I have the luxury of more time to make a decision that is pretty much guaranteed to look good no matter what I do, thanks to squirrel's mockups. No lost sleep over this one!

SW Kilim beige would work w your sofa tone. This shot shows kilim beige and a warm rich brown stain that would work for your floors. These are walnut floors which is not the species you have but there are stains that replicate this color tone. Work w your floor refinisher on that.

I loooovvvveee the all white look with dark floors. So pretty.