Trying to match a shape or text color to part of an image? There are some tools that allow you to identify a color and provide you with the hex color value so that you can copy and paste it into the Color Picker in Claro.
Try a color tool like the ColorZilla add-on for FireFox or the Pixie desktop application for Windows or the Colors app for Mac.
Use the eyedropper or loupe tool to "pick up" any color and copy/paste the hexadecimal color number into the Color Picker color field (make sure you include the hash symbol with the number, e.g. #DFDFFF is the light purple-blue).