someone at viz should have color proofed the book as converting the hex values accurately to cmyk was mission critical imo (yes, i am aware it's available for free online, but holding the book in your hands is a nontrivial aspect of the metatextual experience here. I highly recommend buying the print edition or requesting it from your local library).
otherwise, reading this was easily one of the most satisfying and surreal experiences of my life. brilliant work from everyone involved. thanks obama