Closer to what I would want but still :
\new DrumStaff \with {
} {
\context DrumVoice = "1" {
\override NoteHead.color = "red"
}
\context DrumVoice = "2" {
\override NoteHead.color = "green"
}
\repeat unfold 2 \grooveI |
\repeat unfold 4 \grooveII |
}HTH -- Pierre-Luc Gauthier
