Ton sai

What about that : I saw that last year in February in Ton Sai Thailand. In "Tantrum" 8a+ and "Asia shadow plays" 8a+ the holds for the hands were marked with a small red line (done with a water resistant pen) and blues lines were also done for the feet holds. All of that was done by a Swedish climber (I'll not tell his name), but he spent 6-8 months there, tall, no hair, nice guy, but I don't understand what he has done and I was pretty angry at the time. So what do you think about that???