This commit changes some color names, nuke your theme. This isn't quite ideal
yet, but takes some steps towards where I think things should go aesthetically:
Make automation tracks/regions colors correspond to their parent's type.
Make selected MIDI notes outlined in red like most everything else, and scrap
separate min/mid/max fill colors for selected MIDI notes.
Color automation ghost MIDI notes based on original note color.
Try to kill 90's looking brightish gray gradients in general.
