1. It is sometimes used to express insecure envy towards anyone in a Native community who attains any measure of success.
2. It sometimes means the person is ashamed of being Native, lacks involvement with the community, or has lost touch with the culture.
3. It is also sometimes used to express contempt towards somebody who is perceived as selling out. e.g. Would help non-Native business screw over Native people if there was enough money involved.
Jim: Yeah, he's become a red apple.
Friend2: "We broke up she had one to many red apples."