Searching for greyscale keyboard shortcuts I stumbled upon this nice useful video. However at minute 1:15 she uses a keyboard shortcut to quickly lighten and darken the selected colors. How does she do that?
She mentions that there's a previous video of hers explainig how to create such shortcut, but the video can't be found on her uploaded list.
I also found this page about a darken/lighten script, but the download link it's down.
So, how do you create such keyboard shortcut? I can't find anything about this.