The red on the A-pillars and doors looks to be the original color. That cupholder on the engine cover reminds me of when I sold conversion van goodies back in '74-'75. I was selling parts at an aftermarket jobber and the big boss thought it would be a great idea to get into the hippie van conversion business. Talk about the cheapest, no-good products. . . The cupholders were the only items of decent construction - they were solid plywood with stain or poly finishes. Some had cheap plastic appliques.
p.s. This would be a great opportunity for you to upgrade. How many hi-res displays could you cram into the center section?