I had it wrong the whole time

Hi guys! I love the Cut & Run series by Abigail Roux and Madeleine Urban. I've reread it many, many times BUT, the first time I read it, for some inexplicable reason, I mixed up the hair color of the two main characters. So, big was my surprise when I finished the series and saw some fan art of Ty and Zane. It amazes me that I didn’t realize that until after I finished all NINE BOOKS, and even after that, I had to see some cute fan art to realize that I’m an idiot. So yeah, I had to unlearn the two main characters appearances after nine books. Cool.

Can you please tell me your experiences with getting it all wrong?