Be they grunge or be they clean black, denims are serious. Worn out states "I'm a tough guy, don't mess with me". Clean combines with chrome to say the same in a more studied fashion way. They all demand you to "look at me". Black leather, black denim chrome buckles, belts and bikes - the look endures today and when it is not fashion it is off duty with attitude.
Black leather and jeans is a look which endures today. Born in the era of Marlon Brando, Elvis Presley, James Dean it's smoky, smouldering, sexy.
A clean paired down black black fashion look which retains overtones of a tough sexiness. A "go to" look when blue jeans are just too worn out.
Black denim shorts and dresses can also be lighthearted, not pretty but quirky and gamine. More serious than a pretty floral dress for the occasion.