Why won't my tomatoes go red?

@liquorice (3915)
July 21, 2008 2:22pm CST
Well, the latest update on my tomato plants is that they've been growing nicely and seemed to be doing really well until recently; we have quite a good amount of tomatoes now, but the problem is that they just won't go red!!! Even though they're supposed to be cherry tomatoes, some have grown to the size of a normal tomato, while others are smaller. But even though we've had some of them for a month or more, they are all refusing to go even the slightest bit red . I water them regularly, they are in a nice, sunny spot (although the weather here has been a bit variable), and I also give them regular tomato feed. So you'd think they'd be quite happy... Does anyone have any idea what I should do? Should I maybe be picking off the big ones? (I actually tried picking one of these as an experiment and it's been in a dark drawer for the past three days in the hope that it would get ripe, but nothing's happened so far!) Any advice or ideas would be greatly appreciated.