Things I learned while making this hat:
Even though I worked the Fair Isle portion with the project turned inside out to lengthen the floats so the stitches wouldn't draw in, the color work still draws in. Next time I want to try knitting the color work part on larger needles; the body of the hat on 5s and the color work on 6s.
The appearance of Fair Isle stitches always improves with a wet block, not just steam blocking.
Acrylic yarn can actually be softened during the wet block by using hair conditioner in the final rinse.