Where is one place you can you find the color picker?
The first thing you need to know is how to access the color picker. Either clicking the foreground/background color swatches, which are located on the bottom left of your screen in the tool panel by default, or creating a “solid color” adjustment layer will bring up the color picker.
How do I choose color anywhere on my screen?
Eye Dropper is open source extension which allows you to pick colors from web pages, color picker and your personal color history. Eye Dropper is extension for Google Chrome and Chromium. It allows you to pick color from any web page or from advanced color picker. It is great tool for web developers.