Colin you have nothing to apologize for. They are obviously beautiful corals. Trust me I know how hard it is to get the true colours to come out in a photograph. I definately have limited ability and camera options.

But I'll give it a try.
How about this? I photo-shopped a lot of the saturation out. Not as bright but shows a little more detail and to me looks more realistic. I am sure the coral is actually brighter than this in person.
