I think that spirit day is a good idea. Kind of like an awareness thing. I believe that all people should be treated with a standard of tolerance and civility. That being said, I mean no disrespect but I can't say that it's ok or "not a sin". As a christian myself I should look out for other followers of Christ when they have the wrong idea about something. There's a chap in the comments a bit lower that said they did research and know that it is not a sin. Please, I won't copy paste lines of scripture here because that's lame but read Leviticus chapter eighteen. Just think about it. Peace, I'm out.
Leviticus is in the Old Testament. We are not to live under an old law when there is a new one. Why would there be a new one if the old one would suffice? I never said it was ok, but, I never said I wouldn't accept the person for who they are. If anyone else does, so be it. They can believe what they want, and so can you .