While this is still mostly true, now there's a variety choice. But most exciting is the color. The interior flesh is pink, similar to a 'Star Ruby' grapefruit. Because of the type of mutation it is, some variation in fruits and tree growth is expected. It will be a couple years at least until fruits or trees are widely available.
Fruits are medium-size, deep orange on the outside with a small navel on the blossom end.
Flesh is reddish pink and seedless. Fruits ripen November to March in inland California and November to February in Florida. These aren't new in the way 'Cara Cara' is new, but they're still new enough to warrant inclusion here. Blood oranges are old varieties of oranges that until recently were virtually unknown in the U.S., despite our huge citrus industries. The red color of the flesh and juice is the most obvious difference, but there's something more to the flavor as well.