If you can find a copy of "Emblems of the Rising Sun" by Peter Scott
you might want to get it. It covers Imperial Japanese Army Air Force Unit Markings.
Thats probably the reason.
Take a peek at this site:
http://www.cbrnp.com/profiles/quarter2/typhoons-1.htm
that was the reason they give for the yellow on many of the brit planes.
And you hold what position at Aces studio?
Here is yet another ad, again posted in the past few months:
http://members.microsoft.com/careers/search/details.aspx?JobID=201F600D-7E18-4547-BFF3-1D7DFEA86F53&start=1&interval=10
This topic came up on another board and as yet nobody has found an answer.
Which plane was the first to have the machine guns mounted inside the wing?
the Douglass XA-2 was one of the first (1926) that was found, but there must have been one before that. Anyone know?