Help determining correct interior trim/color. 69 gmc

[91rcsb]

After determining that my truck was a 69 despite being registered and insured as a 71 I have been figuring out what is original and what was swapped. The truck is a 1969 133" GMC Cab and Chassis, no SPID.. It has left me wondering on interior trim/color. What I can tell is the truck was a factory light blue. I believe 507? The top of the dash was a darker blue matching the cluster and glove box lid which was a GMC thing. You can see the dash was the exterior light blue. What has me wondering is if the factory bench came white in this truck, I've had it out and no sign of an original build sheet. I also know the doors are off a 71 but were the sea green door panels, sun visors and mirror the common pattern with the light blue or were they swapped in. I added the radio delete plate. So I was wondering if some of you experienced guys could take a look and suggest what you think would be the correct patterns.

Thanks