These are gigantea carpets not haddoni. I'm certain - although a close-up photo of the verrucae would confirm the ID if anyone is skeptical.
Had I the space I would snap up the blue one immediately. (I already have a green one
).
Be advised that this species is notoriously difficult to acclimate to captivity. Should not be attempted lightly, but these are fabulous looking specimens that are rarely seen.