[pierrec]

Thanks for pointing that out. I've done color space conversion in other graphics applications but clearly haven't learned my lesson. I'll double check and update the interactive figures (and text) if it makes sense. The main "torusphere" shader should be fine because the motion blur is non-realistic and hand tuned, but the first couple of interactive figures are a direct application of theory so what you're saying applies to those. Overall I don't think it invalidates the main ideas in the text though.