Dorie suggested infusing a flavor when the milk was warm. So, I tossed in a few of the hibiscus petals to see if that would add flavor. Unfortunately, I couldn't even tell. More research is needed. If anyone has any ideas, let me know!
Still, this is a great creme brulee recipe. What is even better is that I have six of them waiting in the fridge...and only two of us in the house. My odds are pretty good of going into Creme Brulee Overload.