Please color code "Toggle sync lock"

Sometimes when inheriting a timeline from a different editor, the "Toggle sync lock" has been swithced off on certain tracks. So when I continue editing, these tracks slip out of sync. The icons for on and off status are too similar, a really small line across the icon is all that separates them. I would really appreciate if the "off" status changed the icon to red, so it is obvious that the status has been changed.