Visual grouping in Model View (alternatively, table colors)

Hello,

Many times in my Sales reports I have to import multiple files with various information - e.g: Leads, Leads History, Contacts, Contacts History, Accounts, Accounts relationships etc.

It would be great if I could visually and logically group them in the main window of the Model View in PowerBI or at least if I could color them so I can easily identify them based on what they represent. For example, Leads/History could be grouped with Contacts/History (since Leads "evolve" into Contacts"). Another grouping could be Quote-Quote Line Item-Products-PriceBook etc.

There are two options: one with individually colored tables and the second with blocks. I think the first option is much more suitable since it allows for tables to be located in other sections of the schematic.

I hope it makes sense, unfortunately I can't attach images.

Best,