Uses
Most competitive teams keep two sets of uniforms, with one emphasizing the primary color and the other emphasizing the secondary color. In some sports, such as American Football, the primary color is emphasized on home uniforms, while uniforms for other sports, notably basketball, use the secondary or a neutral color at home. This is done to avoid confusing the two schools' colors. In addition, various groups that generate support for athletic teams, including cheerleaders and marching bands, wear uniforms with the colors of their school.
School colors have many non-athletic purposes as well. Members of a university's community will often display them as a sign of support or spirit for their particular institution. Likewise, during college or university ceremonies, those schools which award an academic hood to their students will generally abide by the American Council on Education guidelines and use the school colors on the inside and the disciplinary colors on the outside velvet trim (regardless of the ceremony, recipients of a degree have the right to wear the hood thereafter). Some doctoral robes will also be in the colors of the university which granted the degree. At many private schools, or more traditional state schools, 'school colours' are awards presented for achievement in a subject or a sport - See Sporting Colours.
British and Irish Universities traditionally have an Academic scarf in the university's colours, usually long, woollen and patterned only with lengthwise stripes of varying widths. Some universities - most famously Oxford and Cambridge University but also others such as Durham and Lancaster are subdivided into colleges, and many of these colleges also have their own colours and scarf.
Read more about this topic: School Colors