Ripening self-seeded tomatoes

The self-seeded tomatoes that grew from the fallen tomatoes from last year are just starting to ripen.

I planted quite a few varieties last year and many of them failed due to disease (it was a cool and damp summer last year), so it's interesting to see what is sprouting up. It's all a mystery until they ripen.

The yellow ones are a yellow variety and not under-ripe, although I might have been fooled into picking the elongated ones (at top-left) too early. I think they are meant to be red!