Color Picker Eyedropper Size
I have iMac Yosemite (10.10.3). The color picker eyedropper in System Preferences >> Desktop & Screensaver produces a circular selection area that has too large a diameter. This makes it virtually impossible to select the color in a smaller pixel area. Can't seem to find how to reduce the diameter of the eyedropper's selection area. Suggestions please?
iTune-OTHER, Mac OS X (10.6.8)