Shortcut for whitelisting current instance of window

[capstan1]

Hi!

I really love what the extension is doing and with the whitelisting of tiled windows it got nearly perfect.

There is just one thing missing in my everyday-scenario: I don't always tile windows side by side, but I put one little one on top of another (for example terminal, on top of Firefox). Now Firefox gets blurred, but I wanted to type something written on the website.

Is it possible to get a shortcut, that let me select one window which will be whitelisted until it closes? (Press Shortcut and then click the window).

That would be really great!

Thanks!