“quarter note “ is the full in
Answer:
Determine size (by counting lines and spaces between the notes)
Determine if the top note is in the major scale of the bottom note.
If it is: the interval is perfect (if it is a unison, fourth, fifth, or octave) or it is major (if it is a second, third, sixth, or seventh)
I would say a flesh color; that’s what’s safest. If you feel daring, then a red or black.
I have no clue you should ask Google
