JREA,
As best I can fiqure out from what I have collected and read over the years for 1941 - 1946 as related to your question is :
1.1942 backout and 1945 grill trim peices,painted bumpers,grill and hub caps are Turret Gray. PPG DAR2847.
2. I do not find anything changing for the interior colors as noted in any of the other forums.
A. Steering Column and trim : Thrush Brown
B. Steering Wheel : Brownstone
C. Inside door panels,panels behind seat ,dash, are Beige Hammered PT 106 sold by Jim Carter #PT106.
Maybe some one else will be able to answer better,
Warner (cvett)