Is it possible to get the first click on an inactive window to not register?

Okay so no one has answered yet. I would really like someone to, but in the meantime, I have a "workaround". If you hold Alt while clicking on a window, it won't register the click. This is normally used for "dragging" the window, so while you're holding Alt, all windows will be draggable from anywhere, not just the titlebar. If you just click, it will bring the window into focus, but it won't actually click in the window. Hope this helps someone.