Hi Theramin,
Good of you to make this information available to everybody. This may not be of direct assistance, however, during GBS Coleman's later posting to 600 Sqn RAuxAF he had an Australian navigator named Neville R. Frumar (Aus.420814). The Australian War Memorial has Frumar’s diaries and logbooks that could offer some insight into Coleman the pilot, albeit, later in the war.
http://cas.awm.gov.au/item/PR86/165
regards, Drew