I love those posters! I see them all around local shops!

There's one in my local Oxfam

Nice

Pretty sure black can’t go in a rainbow

It’s POC
Idk why it’s in the progress flag

It can

Anything can go in a rainbow

Black is the opposite of color

Do you want me to put YOU in a rainbow? 👿

/j

NO

And black is if all colors are not catched by the eye
White is the opposite (it can’t go in a rainbow either)