sample.lytex

\begin{lilypond}[line-width=5in,staffsize=16]

#(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)))))))

\applyContext #(override-color-for-all-grobs (rgb-color 0 0.16 0.48))

\layout {
  \context {
    \Score
    \omit BarNumber
  }
}

\relative c' {
  \numericTimeSignature
  \time 4/4
  \key f \major

  % Mary had a
  e d c d
  % little lamb, its
  e e e e
  % fleece was white as
  d d e d
  % snow
  c1
}
\addlyrics {
  Ma -- ry had a lit -- tle lamb, its fleece was white as snow.
}

\version "2.18.2"  % necessary for upgrading to future LilyPond versions.

\end{lilypond}