I’m used to have the option to get colors outside the software in other softwares like Photoshop and Clip Studio Paint. I think is a very useful feature be able to get colors from other areas of desktop like open images, browser, etc… specially for people using multiple monitors like I use.
+1 for this feature, though I have been using the very handy freeware tool Instant Eyedropper for windows.
It seems that another user (endlesstravel) made a script for exactly that just two weeks ago! Lucky you!