Rendering colors of distinct tracks would get confusing. For example, you couldn't really say "just use the color assigned to each source" since they may actually be the same (which is totally sane for the view provided by the Arranger window but wouldn't be in this scenario). This would probably be the tricky (and potentially quite ugly) part. Just thinking aloud....
Not even sure if you wanted each track to be seen in a distinct fashion but even if you weren't thinking that, someone will surely come along and want them broken out. That would get into the color thing mentioned.
Rendering colors of distinct tracks would get confusing. For example, you couldn't really say "just use the color assigned to each source" since they may actually be the same (which is totally sane for the view provided by the Arranger window but wouldn't be in this scenario). This would probably be the tricky (and potentially quite ugly) part. Just thinking aloud....
Not even sure if you wanted each track to be seen in a distinct fashion but even if you weren't thinking that, someone will surely come along and want them broken out. That would get into the color thing mentioned.