power bi model view table border color "red" "blue" meaning

[garythomann_vac]

In power bi desktop model view, what do the table border colour "red" "blue" mean?

[AnonymousPerson]

My best assumption is that the red lines indicate that a query is hitting a read-only replica.

This happens to me when I directly query my SQL high availability group's secondary/read-only node.

[pawlowski6132]

What about red table borders?

[amitchandak]

@garythomann_vac , Very difficut to tell with this screenshot

[NikhilKumar · Accepted solution]

Table card headers show colors to help you quickly see which tables are from the same kind of source.

All tables that are in import mode will not show a color.

Tables from the same DirectQuery source (blue) will show a color for tables from that same source. 

This was introduced in PBI Nov update . Check the blog here- https://powerbi.microsoft.com/en-us/blog/power-bi-november-2020-feature-summary/