Good point, not sure what to make of that. Given the nightmare that is color management, hard for me to guess what went wrong.

If I had to guess, then maybe something to do with the poor spectrum of the office lights (fluorescent?) that combined with narrow enough spectral response of the camera sensor make the curious effect. I think it is interesting how uniformly cyan the greens are, suggesting maybe that they are based on a similar dye?

Expo has at least three greens that I know of. I suspect this is not their greenest green.

Yeah, I have an actively forest-green-thats-close-to-black-sometimes color from Expo that I use a lot.