I live in Southwest Georgia. I planted two Bonnie Originals and they are doing fine, but the tomatoes do not turn entirely red. They have white swirls and even circles and some of them look like bulls eyes. One good thing, they taste just fine. I have been eating them all week. Any ideas on what is causing this? Heat????

Also, this is my first attempt at growing tomatoes. What can I do to prevent the little black spots , especially the ones on top. I think this is most likely bug damage, but I'm not sure.