The parents of a young american couple expect them to have a traditional wedding, but the bride wants a rainbow dress and the groom wants a close female friend to be his "best man." what does this reveal about culture?

This reveals elements of modern gay culture.

The above is an example of a non-traditional gay marriage, between two woman.

A 'traditional' marriage is considered between a husband and wife, and was only recently the only form of marriage allowed in the United States.

In many parts of the United States, a non-traditional gay marriage is still not socially accepted.