Logical Editor - select tracks within folders -> color

Hey guys,

I am learning the Project Logical Editor right now and I can not find a way to select a folder track and then use the PLE to “select tracks within folder tracks”.

What my goal is - select all folder tracks with the mouse and let the PLE select the tracks within the folder and color them all into a random color.

Can’t find a way to select the “track within folder track”.

Can someone help out please?