.890 340 car torsion bars

can you explain to me the blue paint marks... i understand they are factory markings but my question is does the driver side get the 2 paint marks or the passenger side? thanks
At the factory they did things to mark what the parts where so the guys on the assembly line could grab them quick and not have to look long to know what they where putting on the car. It’s like how they welded a washer on the 340 k frames.