Very interesting. I don't understand why it mentions this to be a brand new discovery, since the presence of opsins in the skin of animals for mimetism has been known for some time, e.g.
https://www.nationalgeographic.com/science/article/octopuses... (2015)
I believe there is some more recent work on this, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448664/
"""LACE (light-activated chromophore expansion) in isolated preparations suggests that octopus skin is intrinsically light sensitive and that this dispersed light sense might contribute to their unique and novel patterning abilities. Finally, our data suggest that a common molecular mechanism for light detection in eyes may have been co-opted for light sensing in octopus skin and then used for LACE."""