Clear Fats vs. White Fats

I think I have figured out the white food comment from the skinny person a few months ago. She said she didn't eat white food, which I found curious. Reading in Cooking Light yesterday I saw something that cleared it up a bit. It seems that foods like cheese, milk, steak, vegetable shortening, and coconut milk, all have the kind of fat that is bad for your heart and happen to be white in color. The clear fats like nut oils, avocados, vegetable oil, and flax, are all the kinds that are good for you heart. So what I think she was saying is that if she was going to eat a food with fat in it, it was going to be a clear one, otherwise, she was not going to eat it at all.