I think it would be great if you could add a colour label to your renders in media encoder, just like what automatically happens in After Effects when you have given your comps a specific colour.

This would help the user differentiate different sources/output when queuing up batches of videos.

It would be even better, if media encoder inherited the colour when rendering comps sent from After Effects.

Attached is a quick mockup. It would also be nice if this was taken a step further and the source name text was coloured too, or at least have an option in the prefs to do so.