Highlight NSColumn

Hi

i have an NSTableView where i need to get just the selected colum. This is not a problem, i’m doing this in the table’s delegate or on button click via selectedRow(). I’d rather need some visual tuning:

No matter which row/cell in a column is selected i’d like to highlight the column instead of the row. I managed it to avoid row highlighting but even with some researche I didn’t find a satisfying solution for highlighting the column.

Is this possible at all?

Any help?