Sorry for the exposure; I tried to lighten it up. Click through for larger images.
Colour can play an important role in your casual wardrobe. I choose navy blue sweaters (in this case a polo collar since I don’t have a normal collar underneath) in cooler weather to mimic the idea of a blazer. The cords are a rusty-red and the socks colourful in their own right. With a band collar shirt, B² ca. 1989 (?), and a woolen neckerchief — no collar on the shirt calls for something, in my opinion — by Polo Ralph Lauren, I’ve tried to tie things together. The shoes are Bass, the “new” profile penny strap in black, about which I am still on the fence.