I just recently seen a all white challenger dash on the interwebs, but I can't find it now. Back in 69 one of my neighbors who worked for Dodge had a Q5 Turquoise Coronet R/T convertible with a all white interior including dash pad, and top. Granted, that was 51+ years ago and I was only 11, but I was a motor head at that age and can still picture that car (along with all the other muscle cars in my southwest Detroit neighborhood)
Anyway, I asked because my sister has a fairly solid F-3 Green 71 satellite but the interior is completely trashed. She wants it painted Q-5 with a white interior. I guess if she really want's a white dash too, She'll just have to paint / dye it, and the column.