It would be most helpful if there were a way to Lock colours for Channels and Tracks in the Mix and Arrange panes.
I'm forever changing them by accident as I scroll-wheel back'n'forth; on the Mix pane particularly and up'n'down on the Arrange pane
My Ctrl+Z gets used for Undoing unwanted colour changes more than anything else …
A little Macro or Scripted button that would Lock colours as they are would save me SO much aggravation, and others presumably.
In the meantime I'll just have to get the requisite scrolling Shortcut Keys better etched into my motor reflexes.