Color info sometimes isn't that clear because mkvtoolnix sometimes selects colours that look alike.

When mkvtoolnix added the colours to show which stream belongs to which source I was very grateful. It helps a lot to identify which track belongs to which source.

I sometimes still have to use the function to show all tracks that belong to that specific source because there isn't a clear difference between the colours mkvtoolnix choses.

If this would improve I would be grateful...

BTW... The program is so helpful with all these details that help me to quickly remux an mkv with different data sources. It's a bit of nitpicking and I feel a bit ungrateful mentioning it.