Personally I think it depends on how the triangle is used. A lot of gay rights groups use pink triangles. The triangle can also be seen many places in Philippine culture. A few FMA schools, as well as MAists with Filipino blood (most notably Mr. Huk Planas) have emblems designed with Filipino weapons forming a triangle. Brian Van Cise's "Instinctive Response Training" has a triangle within a circle.
That being said, I don't have any ink so I may not be the best one to answer