Thanks Bondoman and Sean.
Generally I'm getting my info from the Australian War Memorial's online photo collection, a couple of books including Catalina in Australian Service, and anything I can glean from the aussiemodeller.com discussion group. The AWM collection is good but all of the pics are b&w, and the book has a number of colour profiles which cover the main camoflage schemes worn by RAAF cats. 98% of my reference pics are b&w.
From the blokes on aussiemodeller I learnt that the only -5A cats that were black were the ones converted back to 5 specs with removal of landing gear to save weight for the massive endurance missions they were tasked with. Cats operating from the north of Australia often laid mines off the China coast, with missions regularly lasting over 24hours, and one RAAF cat set the type's endurance record of over 31 hours (cant put my finger on the exact duration right now) And almost without exception these missions were timed to put the machines over enemy territory at night. Hence the black.
So anyway, one of the colour profiles I have is for a -5A in foliage green operating with 8 Communications Unit. Then today I found this photo:
You can just make out the letter codes ZA-T. The code ZA is for 8 Comm Unit but the caption says that the bird and crew were from 111 Air-Sea Rescue Flight:
MADANG, NEW GUINEA. C. 1945-01. IN 1944-12 THE STORY OF THE DRAMATIC RESCUE OF AN AMERICAN AIR-CREW WHICH HAD CRASH-LANDED IN THE SEA IN ENEMY-CONTROLLED WATERS NEAR BORAM IN NORTH EAST NEW GUINEA WAS TOLD. THE CAPTAIN OF THE RESCUING CATALINA FLIGHT LIEUTENANT (FLT LT) I. J. L. WOOD, IPSWICH, QLD, RECEIVED AN IMMEDIATE AWARD OF THE DFC FOR HIS SKILL AND GALLANTRY. WITH HIS CREW, AND AIRCRAFT OF NO. 111 AIR SEA RESCUE FLIGHT RAAF.
In addition, the RAAF museum is restoring an ASR cat and have, in their wisdom, decided to paint it foliage green. http://www.airforce.gov.au/raafmuseum/exhibitions/hangar180/catalina.htm
So that's my 411. Sorry for the essay!