No need to make the extra trip, they are common, if local, here on the island!
They are not a forest/rural species (I have not seen any in my area!) and tend to prefer built-up habitats. They are crepuscular in habit and are regularly seen around bright lights. They are a very social species, and when you find one, you tend to see more. Careful study needs to be done on their identity as many people have made serious mistakes with the identification of this species, and lived to regret their error. I am not aware of there being any successful breeding of this species in captivity. They are much prized by photographers visiting the island , though only the less worn specimens.
With regards to the magnificent find today , I agree that it most likely is a Drupadia sp. aberration. May I suggest you contact the BMNH by email, with the photos as attachments, to see if they have any records in their extensive collection. Mind you, if you find any more, we may well have a Drupadia horacei.