Color the notes of each voice
This plugin colors the notes (and in the 2.x versions also rests (also in 3.0.2+), stems, hooks, dots, accidentals and stem-slashes) according to their voice. The color scheme is the same as the toolbar:
Voice 1 - Blue, Voice 2 - Green, Voice 3 - Yellow, Voice 4 - Purple
This plugin has a versions for MuseScore 1.x, 2.x and 3.x!