- \override Accidental #'color = #darkgreen
- \override Beam #'color = #cyan
- \override NoteHead #'color = #darkyellow
- c4
- \override NoteHead #'color = #red
+ \override Accidental.color = #darkgreen
+ \override Beam.color = #cyan
+ \override NoteHead.color = #darkyellow
+ c'4
+ \override NoteHead.color = #red