I've been having greenish-yellowish spots here and there for quite a while as well. I just finished doing MA SLAMing and the levels are still coming down and so far everything is clear.
I also had a negligible FC loss during the spots appearance. With a solar cover on 80% of the pool, I would sometimes lose only 0.5ppm per 24 hours even though I had visual signs of algae. The spots might be attributed to poor circulation, but I would think it would still show up on the daily FF loss.
The time line of shocking is also interesting:
8:00 pm - starting shocking, initial FC 7.5, target FC (calculated) - 24.7
9:30pm - FC: 23 (1.7 loss, some of it might still be due to UV, some to organics, the estimated 24.7 might be off a bit due to water level, etc)
6:00am - FC: 22.5 (0.5 loss, sun was partially out already), CC:0
So I basically passed the OCLT right away and started MA SLAMing the same morning.
So I would have clear water, no CC, minimal FC loss and some visible green-yellow spots..