I liked the braiding of tone together with color, and the way these bleed over into other senses/associations (lime ice pop, fairy-tale Riding Hood). But I wasn't quite sure at the end if the last sentence was meant to be narration (i.e., was accidentally rather than deliberately italicized)—or was italicized correctly, the protagonist's writing bleeding over into the narration, thus completing your chromatic circle. Apologies if you knew precisely what you were doing, but since it's easy enough to misplace an html tag, I wanted to be clear.