Trouble brewing

Looks like my bean plants are running into trouble, to review here is the shot after they were just planted;

And here is how at least a few of them are looking as of yesterday;

I am not sure what conclusions I should draw from this.  I don't think they are dying of thirst, as the rain we have been getting has been generous.  Could it be just transplant shock that took a few days to show up?  

I admittedly did not harden the seedlings off as much as I should have.  I will try an infusion of organic fertilizer to see if that restores some green.  Fingers crossed.