Issue 490 in lilypond: RGB coloring notes in svg

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Issue 490: RGB coloring notes in svg
http://code.google.com/p/lilypond/issues/detail?id=490

New issue report by gpermus:
% personal request from Graham

I'd like to change the color of notes in the SVG output without using
lilypond.  I use this input file:
----
colorNote = #(define-music-function (parser location color) (string?)
 #{
   \once \override Stem #'color = #(x11-color $color)
   \once \override NoteHead #'color = #(x11-color $color)
 #})
up = \markup{ \hspace #0.5 \arrow-head #Y #LEFT ##f }
down = \markup{ \hspace #0.5 \arrow-head #Y #RIGHT ##f }
\version "2.10.0"
\score{
{
\colorNote "black" c'4
\colorNote "red" d'8
\colorNote "green" e'
\colorNote "blue" f'4
\colorNote "white" g'
a'4.
b'8
c''2
}
\layout{}
}
------

to produce a .svg file.  Unfortunately, the notes are written in a
seemingly-random order.  The svg file contains elements such as
---
<g color="rgb(100%,0%,0%)"
----
but they do not appear in order (ie not black, red, green, etc).  To avoid
this problem, I would like to write arbitrary RGB values -- this will let
me select individual notes to color (with a sed script).

In other words, I would like to do:
...
\score{
{
\colorNote #RGB(0,0,0) c'4
\colorNote #RGB(0,0,1) d'8
\colorNote #RGB(0,0,2) e'
\colorNote #RGB(0,0,3) f'4
...


then my post-lilypond script can change the colors of individual notes by
searching for the appropriate number(s).



Issue attributes:
        Status: Accepted
        Owner: gpermus
        Labels: Type-Enhancement Priority-Medium

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