I have two lists and a grid.
list1 is a cus list
list2 is a prod list
grid1 is a container for prods chosen

Once user chooses a cus they go to prod list.
When leaving cus list it is disabled.
While choosing prods a user can't look up to cus list and see a cus.
All cus look alike--so I want to change the color of selected cus.
But the list must be disabled.

How do I do that.