Rouge can be a color of love, boldness, and vibrance; for Yuna, who dropped an album named for the rosy hue in July, it seems to embody all of those things and then some. Where the singer’s earlier releases tended toward chillier sonic shades, her latest—a collaborative collection of R. & B.-infused pop as polished as it is bright—feels warm and more confident than ever, an apt progression for the Malaysian star. This week, her “Rouge” finds a perfect contrast at Blue Note in six acoustic shows, running Feb. 27-29.