The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
I use black for hips, ankle, some front rack.
Use blue/green for some shoulder stuff.
Some areas I used blue first then moved to up to green.
Progression is a key.
I have some athletes that I started with blue for hips, ankle and moved to green when we were seeing improvement and needed more resistance. Green was too much resistance when we started out.