I love to use these bright colors to mark special places in the music for students to practice different sections to play with a "blue sound" or "red sound" etc. and special notes that have a golden "ring" or a purple "spice". The students often like to choose their own color scheme for each piece. Some students have framed their music and hung it all the wall because it is so colorful. They look back with a sense of accomplishment "Wow! I really worked hard on that. Now I can play it easily!"