Mac users may not be aware - there is a way to quickly eyedropper any color on screen, and this software ships with the OS. Go to your utilities folder and do a search for "DigitalColor Meter" and start sampling away!
AND, if you want to copy and paste the color values, Command-shift-C will copy it!
Eyedropper For Mac: DigitalColor Meter
DigitalColor Meter for Mac
Specifically for you web designers out there, here is a handy built in Mac OS app that I didn't know about until now. I was in search for a Mac alterna...