Not sure if this fits but in Australia winter falls mid-year. Because of that anl Australian Christmas dinner is probably going to be a salad with cold meats, or a BBQ with flies.
Some of our restaurateurs came up with the idea of holding Christmas in July which is, of course, mid-winter. They decorate their restaurants and serve up all those wonderful, hot, traditional foods that would be uncomfortable in temperatures above 35°C.
That's something I never considered. Is there a traditional Christmas meal there? Does Santa take off his coat when he delivers? Does he exchange his reindeer for kangaroos? (I suppose the reindeer don't do well in warm weather.) Do kids leave out stockings? O_o
There was a very popular Rolf Harris song called "Six White Boomers" which will be on YouTube. The Boomers were six big kangaroos that pulled his sleigh. Unfortunately Harris is a paedophile and is spending his later years in prison. As a result his music has become unpopular. (I gotta confess I deleted his songs from my phone.)
Traditional? No, I don't think so. When I was a kid (in the 1940s) our family went for roast chicken (expensive in those days when beef and lamb were cheap), pudding, and so on. I think most people prefer more comfortable meals these days.
Red and white comes from amanita muscaria(fly agaric) mushrooms being red and white and used in Nordic, Germanic, and Slavic pagan winter solstice rituals. (No they aren't like 'shrooms(psilocybin). You don't "trip out.)