I think you should keep it simple. The rest of your outfit doesn't sound too overly flashy, so if you want the hat to look natural on your person it should match that same energy. A nice curve up on the sides of the brim will distinguish your head wear from a fedora. If you do want some more decorative element to the hat, I would recommend having that detail on the hat band, be it just a strip of different color to break up the brown/tan, or some metal decorations. Simple is good.

@Ed Tomlinson I'd recommend brown leather over black, but you know your own style best of all! I'm just here adding my 2 bits.

@Alan Dormire thank you! I own a few that are different thicknesses and textures.

@Dave Yer thank you!

Quite respectable. I hope it’s a rather cut and dry ordeal.

A good sweater can look very sharp, and be versatile.