Polyamory flag. Based on PD flag by Jim Evans
Flag description after Jim Evans' Polyamory Pride Flag (archived from the original on November 10, 2014): The poly pride flag consists of three equal horizontal colored stripes with a symbol in the center of the flag. The colors of the stripes, from top to bottom, are as follows: blue, representing the openness and honesty among all partners with which we conduct our multiple relationships; red, representing love and passion; and black, representing solidarity with those who, though they are open and honest with all participants of their relationships, must hide those relationships from the outside world due to societal pressures. The symbol in the center of the flag is a gold Greek lowercase letter 'pi', as the first letter of 'polyamory'. The letter's gold color represents the value that we place on the emotional attachment to others, be the relationship friendly or romantic in nature, as opposed to merely primarily physical relationships.
http://clarebayley.com/2013/06/a-field-guide-to-pride-flags/
Jim Evans