I've been able to decipher the vin tag easily enough. It's a Y block and Ford-o-matic. It's also a big window. I'm restoring it to the factory look, but I'm confused on the color section with the extra RED stamp added to the standard colors. Is that an engine color? Any help would be great. Just when you thought you had seen it all, then this pops up.

 

Color DE means it was 2 tone: collonial white top over diamond (light) blue. Red = seat color? Custom cab seat colors were black and white woven vinyl with red or copper vinyl bolster and sides.