Tomato leaves turning Grey? I have eight pots of tomato's in my put a bet on...

I have eight pots of tomato's in my put a bet on yard. My Roma tomato leaves are suddenly becomoing grey, shriveled, and very crisp. The sickness, or anything it is, is spreading to the edge of my Beefstake's in the pot beside it. They be doing fine up until three days ago, they even started to fruit.

I have a ton of misquetoes living in them.
I use Liquid Seven tomato spray.
And adjectives of the soil had some 10-10-10 sprinkled in it.

Does anyone know what may be wrong, and how I can fix it? I really don't want them to die after adjectives the work me and my dad put into them!
Wild Bird Experts, Please Help...?
Answers:    This website is awesome.

http://aggie-horticulture.tamu.edu/tomat...

Click on the group of "sick" leaves that match closest to your leaves. That will take you to a larger attitude of those leaves.. then you find the one that you have, click on that, and tada you hold your answer. SO easy and awesome.
My elderly lilac tree is give or take...
Actually if you look real close at the leaves..i bet they hold a very slight purplish tint in that grey you see..this is cause by phospherous defiency..Get a box of miracle grow "bloom'booster" and feed it..bloom booster has alot of phospherous within it and will fix this as well as make the roots strong, and brand name it flower and fruit more..do not confuse it with adjectives purpose miracle grow..which would be a NO NO to feed it now..this is mostly nitrogen which you don't necessitate for it just makes the leaves produce and no fruit..here is a picture of the bloom booster..and also a intermingle with tomatoe problems..scroll down to.."purple leaves"...at the bottom of this link on the problem indentifying chart..

http://www.ext.colostate.edu/pubs/garden...