is it possible or will it someday be possible to have Colored guitar strings in ND?

I teach group lessons in schools and i have found using colored guitar strings (like in the picture)
Colourful Guitar Strings.jpg
to help because i can just say "on the red string" rather than going around making sure every student is on the right one.
i was thinking it would be even better if i could color the strings in the diagrams as well.

thank you