Every generation or so there's a uniform, or a uniform set, that breaks the mold and announces, "You know how things have been done a certain way and everyone's just assumed that that's the only way? We've decided not to do it that way anymore." The Houston Astros and their 1970s "tequila sunrise" design, the Denver Broncos and their Nike-fied 1997 design, the Atlanta Hawks and their current uni set, any number of Oregon football uniforms -- all of them fit into this category.
The Arizona Diamondbacks have just joined that club.