Nonsense. It is not racism at all, especially considering the group is open to girls of all racial backgrounds.

>an opportunity created for one person //

An opportunity only offered to one person out of a group who would similarly benefit from that opportunity simply based on their racial heritage is racism. Yes. It's entirely unnecessary discrimination.

"All the blue-eyed children may leave early for recess." [not a direct quote AFAIK] - the brown/green/whatever eyed children would equally benefit from early recess.

There are plenty of other isms besides racism. Eye-colorism is a different kind of discrimination than racism, unless eye color is just a proxy for race (which is quite possible). Discriminating based on gender is called sexism, discriminating baed on nationality is called nationalism, etc...

Discrimination based on femins is feminism and discriminations based on socials is socialism and discrimination against babars is barbarism.

People learning English might be interested in my English Stack Exchange question: http://english.stackexchange.com/questions/142750/why-is-fem...