How to get the source lists selection highlight to use the Dark Vibrancy appearance in OS X 10.10?

Question

In OS X 10.10 source lists seem to use the light vibrancy appearance. In the Finder (and in some other third party applications, Things.app for example) the selecte

Answer 1

Here is the Swift equivalent :

func outlineView(_ outlineView: NSOutlineView, rowViewForItem item: Any) -> NSTableRowView? {
    return CustomTableRowView(frame: NSZeroRect);
}

And the subclass of NSTableRowView

import Cocoa

class CustomTableRowView: NSTableRowView {

    override var isEmphasized: Bool {
        set {}
        get {
            return false;
        }
    }

}