Seemless backgroundcolor for a NSTableView Row

Question

I want to create a seamless background color a tableview row, however I see it breaks at the end of the cell which I suspect is the part where the imageView is. what is the best way to have a continuous color on the whole row of the NSTableView just like the alternatingRow color? This is what I get when I do

    cellView.wantsLayer = YES;
    cellView.layer.backgroundColor = [NSColor redColor].CGColor;