I'm just speaking on behalf of my own self here, but it's unfortunate to me how common it is for hobbyists to be mislead by coral photos. It does take a bit of a trained eye to spot manipulation of various sorts, but provided you get armed with said knowledge, it's generally not too difficult.
Consider this incident, it is possible that they really didn't photoshop the picture, or otherwise manipulate it with software. HOWEVER, if that's the case, they certainly did some tricks when taking the photo. My best guess? The lighting was done with violet lights, or a "UV" flashlight. There might have been an orange/color filter at play too. You can get some corals to look just like this photo by doing those things, and never needing to mess with saturation or color in some sort of post-processing.
Not a current sponsor. I don't recall if they ever were in the past.
Perhaps check Wayback Machine, or another internet archive?