A nice detail is the gray color that works with both light and dark.
Vintage Marlboro Wild West Cowboy Killers Shirt XL Skeleton Horse Graphic Black
You will find that the graphic print has a slightly raised texture for depth.
Outlaw Cowboy Skull Unisex T-shirt | Vintage Western Skeleton Horse Rider Shirt
You will find that the black color doesn’t show dirt easily.
Skeleton Horse Rider Western Graphic Tee Cowboy Rodeo Saloon T-Shirt
This is an unbranded shirt, so you can wear it without any labels showing.
Scuderia American Cowboy Skeleton Horse Vintage T-Shirt
What stands out about this shirt is the graphic print of a mountain landscape.