Colour coding data tables in desktop (NOT VISUALS)

Is there any way at all that we can colour code our data tables in Desktop? to me it seems obvious that you would want to colour code when you have multiple tables so you could quickly search for tables in both the 'Fields' section and in the Relationships view on Power BI. sales vs purchases , Staff vs customers or whatever you need to easily visually segregate. I am flummoxed that there is no evident way to do this. To stress - I am not referring to visuals but to actually assist the desktop designer. Has anyone else encountered this as an issue? Does anyone have a solution?