Drag and Drop questions

Hi all,

I have attached a single slide copy of the drag and drop I am trying to create.  I am open to alternative ideas should you have them, but for now, this is what I am trying to accomplish.

Learner will hover over one of 6 'Scenario' boxes at the bottom of the page.  The scenario becomes visible via a layer shown on hover.  

The learner then must decide if the scenario is a DO or a DON'T and drag the box to the appropriate drop location.

This part works - 

What I haven't been able to successfully build is the next part.

I would like for the dropped boxes to change to green or red depending on their accuracy of location after the leaner clicks submit.  

Assuming there are some that are incorrect, I would like the learner to either be able to reset their choices or just move them and click submit again.

Finally, I would like the 'Continue' button to be disabled until all of the boxes are correctly placed.  

Thanks in advance for any help or suggestions.