VCCA Home Forums TECHNICAL - 1945 AND EARLIER 1937-1945 Name plate information

My 1941, now being restored, shows the following information on the name plate. Can you help me decipher what it means or point me to a good reference source?

Style 41-1067
Body L 11429
Trim 123
Paint 291
Top BT

Were convertible interiors leather or vinyl/leatherette, or optional choice of either? Was there a choice in interior color, or was it tied to the body color? If so, what were the choices, or what's a good reference? (For instance, pictures of Cameo Cream convertibles all seem to have red interiors and black tops. Would tan or brown be authentic choices?)
Thanks for your expert input. I want to keep the car real athentic while upgrading the technical quality of materials.

41-1067 = 1941 convertible (cabriolet)
L 11429 = L-body made in Lansing,(all convertible bodies were).Number is production sequence number
Trim 123 = red leather/imitation leather
Paint 291 = Kingston Gray - a light gray color
Top BT = not sure but would refer to color of top and binding.Would guess a black top with red binding.
The top color and interior color would be matched at the factory with no choice for most colors.They picked out what went well together.
The seating surfaces were genuine leather.The seat backs and door panels were imatation leather.
Tag only refers to the body which was made by the Fisher Body Division of GM.