Remember, the white golden commandos car was a test mule. So it is possible that it had a red interior because it wasn’t the A990 interior. Also remember that no 2 pictures of a car are the same because drag racing was progressing at light speed. So the cars were changing on a weekly basis.
Here is an interesting summary of the process Chrysler did to convert the cars into A/FX drag racers.
http://www.speedcityresin.com/BelvedereAfxers.html