Idle Detection - Adjust Dim Level

[eikonic]

I just came across Twinkle Tray as I was trying to find a way to have my screens dim rather than going into power save mode. This little app is great so far, and does what I was hoping, however, unless I cant find the setting, there doesn't seem to be a way to control HOW dim the screen goes when the idle detection limit is reached.

I did try and search a few terms to see if this has already been mentioned, but I didnt see anything. If this is not a feature, it would be great if that could be implemented. If it IS a feature, perhaps someone will read this and direct me to where I can find it, or how I can set the level to be dimmer at idle.

Thanks!