Hi Jen. I'm new to cats so I cannot comment on your King, but what I can say is this:
Do catfishes change their colour intensity with their mood? My experience with community fish and African Rift valley fish is that they do almost continuously.
So my guess here would be that it may well be the L066 you were promised, but maybe a little stressed out because of being moved?
I have similar issues with fish identification with African Rift Valley Fish (many hybrids and close relations) so what I try and do is find 2 or 3 possibilities and then research them to find the small differences between them.
It's generally the small differences that count.
(Not to say Daragh is wrong of course)
Also, why does this forum blank out the Cichlid word? (CICH-LID)
Good luck with your ID.....
Kez