Can anyone tell me what the floor finish on April 10 built Metuchen 67 Mustang

[Fast Fords]

Hi, I am looking for the correct floor finish on an April 10 built Mustang at the Metuchen plant on a 67 Mustang. Is it black, mixture of colors or is it the red iron oxide color ?  Any pictures would be great. Thanks...Greg.

[J_Speegle]

Looks like tints of fairly strong red oxide epoxy primer like earlier years with the typical body color and later black pinch weld black out over spray. Similar to some periods of finishes at San Jose during the same production year

Same from around the same time period