Growing up in New York City, Brooklyn, and then Queens, I learned quickly to never judge a book by its cover. So, no, I do not try or not try blends based on how the tin or any packaging looks.
In regards to tins that I find attractive, I don't really find too many that are visually appealing. Perhaps McClellands Virginia and Christmas Cheer type tins with their famous Whale. Some are downright juvenille, and I dare say that this is why some find it so easy to claim young kids are being targeted.