Here are a lot of beautiful options for vintage style floral guitar straps.
Guitarists looking for a softer style from a simpler time will enjoy these. Modern singer-songwriters inspired by folk, sunshine pop, or hippie music of the 60s and 70s will be drawn to them. Some designs go even further back drawing from victorian era patterns.
Flower patterns are usually considered feminine but they can add some class and style to even someone exhibiting the roughest exterior.
Not limited to bright vibrant colors some of these contain more subtle and darker color tones that will match any instrument or stageware.
Vintage Style Nylon Floral 

Traditional Red Flower 
Stylized Vintage Floral 

Blue Floral Vintage 

Pink Vintage Floral 

Vintage Red Flower 

