script to color specific notes

Hello, I'm looking in existing scripts dealing with colors without any success... the way to color certain notes in red, depending on the octave they are in.
I have a barrel organ, which can play only C D F G in the low octave (bass), then octave above all the notes except C# D# G#, next octave all play, next one only C and D.
So I would like to color in red the notes that the organ cannot play, to see if the song can fit my organ range. In addition, automatically select all that 'wrong' notes could be fine (i.e. to delete them...).
Thanks a lot !