I have three of these in use, in dark and light brown, and black, which is more a dark anthrazite. Very satisfied, soft, comfortable to wear.
https://www.amazon.de/BISONSTRAP-Uhr...ps%2C68&sr=8-7
And this.
https://www.amazon.de/Praetorian%C2%...s%2C55&sr=8-21
And a default titan strap (Citizen), which looks very good and is comfortable.
As much as I like many Citizen and Seiko watches, the straps usually are
uaahhh... Even the metal ones for very expensive watches.