I started some of my own tomatoes from seed this year. Some polar beauty's. But then I got 5 siberia plants from my father in law. My own plants are doing fine, looking great. But the 5 I got from him all have discoloration. I started mine from seed at our old apartment the put them in my father I. Laws greenhouse to let him care for them while we moved to our new property. His plants were super green and looked great when I brought them home. Why are only his like this and not mine? They have all been under the same conditions.. I would post a picture but it won't let me. The plants range in color all over(except for new leaves) from yellow to brown to grayish black spots. I thought maybe it was caused by a couple of frosty nights we had by surprise, but my other ones don't have any discoloration at all..just seems strange to me..