Then there are the heart or paste varieties that have less rigidity to their stems - Purple Russian, Anna Russian, Speckled Roman - they bend and flop and wave in the breeze, looking far less healthy than they actually are. Finally, there are the marks from the effects of windy, cool rain, showing up as brownish purple mottling or patches on a few varieties, especially Orange Strawberry and, as usual each year, Sungold. Perhaps it is indicative of the heat loving parents Sungold, but it seems to be one of the unhappiest tomatoes of all until the weather warms and settles.
Today has seen some amazing gully washing downpours. My garden has a river running through it, and the holes that were dug for tomatoes are full of water. If you have already planted, be sure to keep that lower foliage dirt-free by mulching around the plant. If the water doesn't drain away reasonably quickly, the poor drainage could lead to the plant drowning.
Although it is too early for tomato diseases, it is not too early for problems. Be vigilant and act accordingly!
see below for the post-deluge view of my garden (glad I didn't plant yet!)