Hello Andrew
That could be a great idea. If one can make the color change with note pitch, and allow for chords (triads in our case), and take into the account that the flat/sharp notes uses number notation rather than colors..
Regards,
Hallvard
Den 12. februar 2018 kl. 04.23.21 +01.00 skrev Andrew Bernard <address@hidden>:
What a wonderful project. And welcome to lilypond.
You can make coloured background easily. We have a snippet repository - the Lilypond Snippet Repository - full of techniques that are not fully explained in the manual.
This may be what you are after, rather than coloured noteheads, I think.
Andrew