My wealthy mother served us all a feast for Christmas dinner, but she served nothing to my Uncle because she didn't like the color of his tie.
You must be joking! Why would she do such a thing?
Because she's a bitter person and a snobbish cunt. She thinks she can control everything.
It sounds like your mother is very petty if she would refuse to serve a family member simply based on the color of his tie. Everyone in your family had a right to join in with dinner regardless of what they were wearing. I hope she realizes that her wealth doesn't allow her to be so rude and controlling. Maybe she'll listen if you talk to her.
Maybe I will get her something gold next year to make fun of how wealthy she thinks that she is.
I strongly suggest that you try to talk to her about being more accepting of family members instead. Hopefully she can learn to improve her behavior.