When I think of "old Hollywood", satin and velvet immediately come to mind - something shimmery and elegant. When you look at images of "old Hollywood" bedrooms there is a lot of satin. Do a very simple geometric pattern using washable satin and washable, low loft velvet (but not velveteen). Possible patterns could be square in a square, just plain square blocks alternating in 2 different colours with occasional embellishment on the satin squares, fan pattern with embroidery.
I made a satin and velvet quilt many years ago for a gift and the results were stunning. It was alternating 8" blocks of pale blue satin and royal blue velvet - quilting design on satin.