The second wedding I'm going to is my sister's, and her colour is navy. She sent me a photo of what she liked and I sort of did something similar. I found a really nice heavy white silk (in lieu of the silver she wanted and was unavailable) for the cover, and then used some ribbon as contrast. Apologies for the photos! I need to get something set up here so I can take some good ones.
The original book had beads along the ribbon so I sewed a few along the wider one, nice little ones that really catch the light, even if the photo doesn't show it.