Red Cabbage!

Dr. P and I were out for a stroll on New Years Day. It was beautiful weather and we enjoyed our walk along the Thames. We decided to stop at a riverside pub for a late lunch. Unfortunately, many other people had the same idea. It was very busy, but we managed to find a seat and eagerly checked out the menu. I was starving, absolutely starving I tell you. I decided that I would love a steak pie. When I went to order, I found that there was no steak pie left and there was an hour wait to get food. I was bitterly disappointed.......
Dr. P immediately tried to cheer me up, by offering to cook me a delicious dinner at home. She promised me Swedish meatballs (specially imported from IKEA), gravy, onion rings. Sounded fantastic. And then came the bombshell. She told me with excitement that we could even have red cabbage. Red cabbage?? I stayed silent, but I was thinking "are you really trying to cheer me up with red cabbage?"
I don't really understand red cabbage. Why's it red? Does it have red cholorophyll? Was it invented to give to children who refuse to eat green vegetables? And I certainly don't understand how it was meant to cheer up a person craving a steak pie. Anyway, we went home and we had a delicious dinner, including the red cabbage. And yes, life was much better after the red cabbage........