Overview
Colors are the insignia, or "patches", worn by motorcycle club members on cut-off vests to identify membership of their club and territorial location. Club patches have been worn by many different groups since the 1960s. They are regarded by many to symbolize an elite amongst motorcyclists and the style has been widely copied by other subcultures and commercialized.
Colors are considered to represent "significant markers of the socialization" of new members to clubs, rank and present a dominant symbol of identity and are marked with related symbolism. They can be embroidered patches sewn onto clothing or stenciled in paint, the primary symbol being the back patch of the club's insignia or logo and generally remain the property of the club. Wearing such clothing is referred to as "flying one's colors". The term has its roots in military history, originating with regimental colours.
Meaning
Colors identify the rank of members within clubs from new members, to "prospects" to full members known as "patch-holders", and usually consist of a top and bottom circumferential badge called a rocker, due to the curved shape, with the stating the club name, the stating the location or territory, and a central logo of the club's insignia, with a fourth, smaller badge carrying the initials "MC" standing for "motorcycle club". Female clubs spell out “motorcycle club” on their vests.
The badges are used to create a social bond and boundaries and, generally, belong to the clubs involved rather than the individual wearing them. Although, bikers perform community service and give away thousands of dollars to charity, the wearing of them can often lead individuals to be refused service at related businesses and bars, and some biker bars have a "no colors" policy, to reduce conflict. Claiming STATE territory by wearing a bottom STATE rocker can lead to violent conflict with a rival club, such as in the 2015 Waco shootout, which was partially caused by a club wearing a "Texas" bottom rocker.
From Wikipedia (CC BY-SA 4.0).