I had a similar experience! When my SM first told me about Lettre Kelly collection last season, I told him that I wasn't interested. I'm not into colorblock and the color combos didn't work for me, a little too wild for me. Fast forward, almost a year on ban island with nothing exciting to add to my collection and being a bit more picky, my SA offered me Vert Vertigo, green was not a color I wanted. While I was taking a few day to think it over, my SA asked me to stop by again and showed me letter "H" in vert cypress/blue obscure/malachite. I was pleasantly surprised, the subtle contrast of exterior colors was not too wild, and the interior pop of color was so special. I was all set on getting the Vert Vertigo, but after seeing the Lettre K...I couldn't decide. My SA told me to take a few more days to think it over. I couldn't stop thinking about the Lettre K the moment I left the store while I was driving home, had to email them ASAP!!!
Interestingly, my zipper pull is different from yours, mine is blue and matches the interior color. I love that yours is different, yet I also love that mine matches
Luckily they made the decision for us
Funny how our zipper pull colors are different! After posting the interior photo, I checked my other verso and noticed that the color of the zipper pull is also identical to the exterior color, not the interior, I thought I was being a bit silly getting so excited about something that's so obvious. But I guess it's not silly after all. You never know what it will be! Every bag is a surprise! 
Thanks for sharing this photo.
