Sample Color from Anywhere
You can use the Eyedropper tool to pick colors from any area of your screen. First, press the letter I to select the Eyedropper tool, then click-and-hold inside your document, and drag outside the document window onto the object you'd like to sample. Release your mouse button and the sampled color appears as your new Foreground color.
So simple yet saves so much time! Thanks for the info.