In the mixbus mixer, the rec/mon buttons are smaller
If Input is not shown, then you are just mixing, so the_CLA and I think it is ok to hide the MIDI input button with the audio input button
Various UI tweaks.
Refactor comments dialog into Route_UI so it can be shared by tracks and strips.
Make Color and Comments selections consistent in the menus
Refine the color displays at the top of each mixer strip
Correctly color the number displays on tracks