my personal opinion,jus take the risk & do something bold & fun!! hehe

the fan chart colour seldom turn out the same on actual wall (based on personal experience!)

i painted my stdy room light blue & feature wall darker blue - nice n calmin effect
i painted my guest room magnolia (off white) & feature wall ruby red - wah, red vry vry red, so im gonna "tone down" with white furnitures & white photo frames
painted my bedroom w some offwhite colour n feature wall brown, didnt like the two combo vry much, but oh well, cant win 'em all...