I am African American. I have refrained from posting to this thread, but feel the need to post the definition for and some history about the referent "People of Color":

"Person of color (plural: people of color) is a term used, primarily in the United States, to describe all people who are not white. The term is meant to be inclusive, emphasizing common experiences of racism. People of color is preferred to both non-white and minority, which are also inclusive, because it frames the subject positively; non-white defines people in terms of what they are not (white), and minority, by its very definition, places the subject in a subordinate position. "Person of color" has a positive connotation and has often been preferred by people of color in the US.

Although the term citizens of color was used by Martin Luther King, Jr. in 1963, and other uses date to as early as 1818, people of color did not gain prominence for many years. Influenced by radical theorists like Frantz Fanon, racial justice activists in the U.S. began to use the term "people of color" in the late 1970s. By the early 1990s, it was in wide circulation. Both anti-racist activists and academics sought to move understandings of race beyond the black-white binary then prevalent."...

http://en.wikipedia.org/wiki/Person_of_color

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The "P' and the "C" in "People of Color" is aways written in caps (to reflect its use as a racial/ethnic referent since the first letter of racial, ethnic referents -with the possible exceptions [for some people] of "White" and "Black"-are always written in capital letters).

The accepted abbreviations for People of Color are "PoC" or "POC", again notice the capital letters. The terms "Women of Color" and "Men of Color" are also widely used, although it doesn't appear to me that the abbreviations for those terms are common.

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For examples of the use of this term, read this essay and comments from the blog racialicious.com (where most of the posters are People of Color who are first generation mixed race-and not necessarily Black/White)-

http://www.racialicious.com/2009/06/03/new-words-for-mixed-race-people-of-colour-with-or-without-white-ancestry/
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And, having posted this information, I choose to post no other comments to this thread.