I think the yellow dials were a development of the Fulvia 3 white(?) dials, but they were slated as un-readable at the time. As you say, they seem to look good now though....
Yes, I'd forgotten about that fabric. Do you remember Mattnovat? He'd sourced a similar orange material for his Series 1 restoration, but it involved manually scraping off a foam backing. What happened to him/his car? He was a regular contributor on here some time ago.