How to color part of the plot

[#1]

Hi Guys, 

I have the following plot captured from others, it has two different colors blue and red at two local area. This is very useful to highlight the areas. Could someone advise how to color the plot like this. Thanks a lot. 

[#2 · Accepted solution]

A column named Root Strut Flag has the value of 1 for the rows in the data table that are to be colored red, and a 2 for the rows in the data table that are to be blue.  Then in Graph Builder, the column Root Strut Flag is dragged and dropped in the Color drop area.

[#3]

Hi Jim,

Thank you for the solution. Adding another column makes sense.