White cauliflower is the most common kind of cauliflower, but there are many other varieties. Orange cauliflower is bright orange, and it becomes a slightly darker color after cooking. Purple cauliflower is purple. Some types, like Purple Head, turn green after cooking. Others, such as Graffiti, stay purple. Violet Queen is very dark purple, and it is resistant to cold weather. Cauliflower Romanesco is lime green, and the florets are pointed instead of rounded. People sometimes call it Romanesco broccoli or broccoflower. Fioretto cauliflower has looser florets than most other varieties, and it can be partly white and partly purple. Colored varieties aren't as sensitive to the sun as white cauliflower, so they won't become discolored as easily.