Hope you're feeling better Chocola 
I'm very partial to Cognac leather, Peony. Not a fan of metallic in shoes unless specific designed with lots of detail (like trainers or brogues), I think they can look a bit occasion wear and they don't tend to age well. I quite like suede in summer as a neutral, the material also seems to work well in summer. The first two attached are from L'exception. The first have a longer footbed so perhaps a better fit with your feet shape? The third is a pair I've been contemplating from Aeyde but they're a completely different thing, they're very sculptural and pronounced but would work well in balancing out more casual pieces which is the balance I usually need to navigate. I do like grey suede as a neutral though, it's surprisingly versatile.
Do let me know when the book comes out, it sounds good. Blue (and purple) have a really interesting history, there's something about it too when you see pure pigments, it's absolutely hypnotising.
Thanks for the links, everyone, will go and have a nosey. I think I saw a version of my Levi's at Mango or Zara as well but it looked a bit crap in comparison, my stripes aren't straight, they go in and taper at the ends which makes them a bit more flattering, I feel. But they're probably based on Levi's Re/done jeans which go for megabucks but often are discounted to normal Levi's prices on the Outnet and similar.
I've also just seen Uniqlo has a Collab with Princesse Tam Tam again (French lingerie brand) with lots of great looking swimwear and beach/pool dresses and shorts for very little money. Hopefully they'll have some in Antwerp when I'm there next week.