Just figured out that I was being clumsy with my calling syntax for
x11 color constants (and sent a retraction to bug-lilypond). Section
8.5.7 "Coloring objects" explains the calling syntax for x11 colors
perfectly and, in fact, links to the list of colors in appendix C.3.
Would it be possible to add a corresponding hyperlink in appendix C.3
"List of colors" to point back to 8.5.7?