Color grid based on the cell value

[tangolp]

Hello,

I have read the the thread on how coloring the grid. But I have a question on how to color a row when the user changes the value of a cell. For example, I'm in the SalesTable form, where I create a new order. At the bottom portion of the form, I add a sales line where I choose an item. Once the system validate the item id, I'd like to color the row. Please provide code sample. Thank you.