Feature request: Minimum Brightness setting, to avoid total blackout, which is difficult to undo

[Andy2No]

I've just started trying LightBulb, hoping to find a better alternative to f.lux. It looks very promising so far, but I almost locked myself out of the settings by dragging the Brightness slider too far to the left and letting go of it (I use a Cirque touchpad, so that sort of awkwardness happens more easily than with a conventional mouse) - it went so dark I had to grope around to find the slider to make it visible again.

I suggest a minimum brightness setting, which can be adjusted by the user (e.g, in a text box) with a warning that the Brightness setting might be hard to reverse if it's set too low, especially before setting up and testing hot keys to undo it. This would mean that the slider is not allowed to be dragged to a lower setting than the user specified minimum, which could initially be set to something fairly safe, like 50%, when LightBulb is first installed.