Knowing that your access to a selection of diamante librarian spectacles is limited, I took the liberty of doing a little shopping.
Figure 1. Red
Figure 2. Black
Figure 3. Blue (sans diamante, but still quite fetching)
Here's how they'd look on une fille rouge who has one ear attuned to the winds of fashion.
Figure 4. Hmm. I'm thinking a little more contrast with the red of yourselves would be better.
Figure 5. Oh my. A bit on the manly side, despite the lovely accents at the temples.
Figure 6. Voila!
Only my opinion, though. Perhaps we should have a vote.
