Now I see that this can be difficult, and I never used a solder on such a small component. I don't have money for new GPU so I don't want to risk it too much as I need to upgrade my CPU, so I think I will stick with the green LEDs.
However I think I will replace my motherboard light as it looks like a much easier job.
Yes, there are 12 LEDs on my PCB, and 1 lit led indicates that 1 power phase is being used (my GPU has 12 power phases. The more power GPU uses, the more power phases will become active, so it sort of can indicate load
Thanks for the input