Value Checker using AutoAction
SETUP
Add "Create grayscale layer" to Command Bar [File > Command Bar Settings > Auto actions > The Quickest Value Checker > Create grayscale layer > Add]
Change the shortcut of "Select grayscale layer" to Ctrl+Y [File > Shortcut Settings > Auto actions > The Quickest Value Checker > Select grayscale layer > Ctrl+Y]
Change the shortcut of "Deselect grayscale layer" to Ctrl+Shift+Y [File > Shortcut Settings > Auto actions > The Quickest Value Checker > Deselect grayscale layer > Ctrl+Shift+Y]
Step 1: Click the "Create grayscale layer" shortcut icon on Command Bar (Only have to click ONCE every use). Then a "Value Checker" layer will appear on top of the layers.