Possibly Azul, although the passage that Graeme has found above suggests they are two different aircraft?
Taking a quick look in Butler's War Prizes, the entries don't clarify matters much, but hint at the two aircraft in the images are in fact the same machine, the book stating that the ATAIU flew an H6K, which was found at Surabaya and was made airworthy by 3210 Servicing Commando, it was marked in Indonesian markings and was flown to RAF Seletar, Singapore where it survived for some time, apparently its hull was used as a floating headquarters by the local RAF sailing club. A couple of pages away is the images above that Graeme posted, the bottom one commonly appearing in references on the type and describing the painting of the blue stripe on the fuselage flash by the Dutch.