I have to say I disagree.
BCNA do fantastic work and this is a total non-issue. I suffer from a chronic, incurable disease which is associated with a coloured ribbon: purple. Does that mean I am ...what? Transgender? A grape? A jellyfish? It's just a coloured ribbon. That's it. The purple ribbon is a symbol that's associated with epilepsy.
Pink ribbons are associated with breast cancer. That's it.
"Pink is for girls and blue is for boys," said 1989. Come to think about it... Pink is not "for girls" and blue is not "for boys". It's not 1989.
Why though? Who decided that?
In the 19th century blue was actually the color that was meant to be for girls, because it was seen as a dainty color, and pink was seen as a stronger color.
My experience has been that there are strong women and strong men, and that colours don't really come into it.
In the 1960’s the women’s liberation movement through out this social norm and threw gendered colors out the window. Ultrasound scans brought them back.