Customize Flex3 datagrid drag

Question

Hello,
I have a flex data grid with multiple selection set to true. If I try to drag let say 10 rows, then all those 10 rows move along with the mouse cursor and it looks really annoying.

I don't want to show any text when user is dragging the rows. I want the user to see only red and green images on the cursor which indicates whether user can drop the selection or not into the component where his cursor is.

Any suggestion is appreciated.

Thanks