Tomatoes

One of my tomato plants, and a couple of leaves of another one, located
3 plants away from the first one, are showing rolled up leaves. The
first plant looks nearly wilted.
I checked my Hessayon veg expert, and it states that if there is
neither parasite nor disease present - none of which I saw on the
leaves - it is nothing much to worry about while the leaves remain dark
green - which they do. It suggests that it could be down to big temp
differences between night and day, and lately we've had both very hot
days, and most recently very chilly ones (10 degrees when I left home
this morning).
So, maybe this is it - but I am concerned nonetheless - anything I
should do? I can obviously not warm them up much when they are grown
in grow bags out in the open.

Broad beans

It is my first ever time planting those, and even my Dad never did, so
I have absolutely no idea of what to expect.
The plants are extremely healthy and vigorous looking, about 40 to 50
cm tall, full of white flowers with a black dot. I have noticed that
the flowers which come to the end of their lives are turning what to me
looks like a worrying looking sutty black. Yet again, I checked my
trusty Hessayon and its botanic hypochondria-inducing list of ailments
for peas and beans - nothing about blackening flowers.
Is that normal, and am I worrying over nothing?

TIA

Cat(h)