There is no church that closes its doors to a person based on his color or nationality. Anyone can go to a church and pray - even a non-Christian. A couple of years back my church invited two muslim scholars to the church and talk about muslim philosophy.

yes, Hinduism is the only major religion which does not accept new "converts". Hindu authorities do not regard the Hare Krishna followers as Hindus. Hindus refused to officially recongnize Mick Jagger's marriage to Jerry Hall in a temple in Bali, Indonesia. In order to be a Hindu, someone has to be born to Hindu parents - something that the individual does not have any control over.