Pink Because of this, the pink triangle has become a symbol of the modern gay rights movement. The transition to pink as a sexually differentiating color for girls occurred gradually, through the selective process of the marketplace, in the 1930s and 40s. In the 1920s, some groups had been describing pink as a masculine color, an equivalent of the red that was considered to be for men, but lighter for boys. But stores nonetheless found that people were increasingly choosing to buy pink for girls, and blue for boys, until this became an accepted norm in the 1940s. In optics, the
Pink triangle in school. The pink triangle served as the basis for the "biangles", a symbol of bisexual identity which consists of pink and blue triangles overlapping in a lavender or purple area. The pink and blue symbolize either homosexuality and heterosexuality, or female and male gender, reflecting bisexuals' attraction to both. The symbol of the pink triangle has been included in numerous public monuments and memorials. In 1995, after a decade of campaigning for it, a pink triangle plaque was installed at the Dachau Memorial Museum to commemorate the suffering of gay men and lesbians. In 2015 a pink triangle was