highlight item in spark list

Question

I have two spark lists and want to drag items from one list to the other. When im dragging an item and over the other list item, i want the target item to change the background coloer.

Basically instead of showing the black line indicating that I will drop between elements, I want to see the target item highlight.

Thanks in advance.

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Edit: Something that would look similar to this drag and drop:
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Answer 1

I would ask you to point out a UI precedent where this is standard / expected behavior.

When you drag an itemA onto itemB; and itemB is highlighted somehow, it usually means you're dragging into ItemB. But, in this case you are not dragging item from List1 into the item from List2. [I assume at least].

You'd have to override the list code drag and drop features to make this happen.