I am not a big fan of yellow, but it works so well in these rooms. I never thought yellow could look this gorgeous. Instead of being generic and boring, these rooms use yellow to accentuate the accents so well (if they aren't the accents themselves).
I love the yellow accents against the white bedroom; such a lovely contrast.
(Images 1 & 2 from Decor Amor, and I forgot the rest. Sorry!)