Custom icons that change with modifiers

Hello! I am a Sibelius user and I would like to add icons to the F keys on the Touch Bar to indicate what the buttons do - without changing any functionality as all of my shortcut are set up in Sibelius. Is this possible?

Also, I have different functions set for each modifier ie shift+F3. Is it possible to show a different set of icons when the shift key (or other modifier) is pressed so I can see what the F keys will do with that modifier?