Am 11.06.2012 18:32, schrieb David Kastrup:
It would be good if you mentioned what override-color-for-all-grobs actually is.

I found it here:

http://lsr.dsi.unimi.it/LSR/Snippet?id=443

#(define (override-color-for-all-grobs color)
  (lambda (context)
   (let loop ((x all-grob-descriptions))
    (if (not (null? x))
     (let ((grob-name (caar x)))
      (ly:context-pushpop-property context grob-name 'color color)
      (loop (cdr x)))))))

Eluze

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