This extension may not yet work as expected on the mac, you will have to use the pop-out button to put the preview in it's own window, move that aside, and refocus the main window.
Either that or enable the option:
"Show image preview near cursor"
"Icon is zoomed colorpick pixel preview"
If you feel the need to alert the developer about a bug use the feedback forum instead of writing a review.
If you are having problems with accuracy use the arrow keys, and enter to pick colors once you get the mouse in the approximate location.
Please note that colors are picked from a snapshot of the page that is updated only when you scroll. To take a new snapshot press r or use the re-snap button.
ATTN: Some users may experience funny "wrong color" bugs if they have certain video cards with shared memory. You may need to disable GPU compositing from the page about:flags until further research is done with regard to this matter.
As with most extensions of this nature, it will not work out of the box on the web store, or on file:// pages. It will work on local file pages only after you "Allow access to file URLs" from the tools->extensions manager.
If you need to operate on unsupported pages or need more speed try the desktop app version (mac+pc) at color-pick.com
If you're looking for a quick and easy to use color eye dropper with zoomed drag-able preview for fine tuning you've come to the right place. If you experience any bugs PLEASE report them using the feedback button before rating 1 star.
ColorPick may not always perfectly accurate, especially at every zoom level. Please report any bugs! It has been reported that it may take a few tries before it starts working initially. You may have to refresh the page or re-load the extension.
Color Pick attempts to use lossless PNG quality to detect colors. If you experience bugs or distorted snapshot of the page disable this feature to use JPEG quality.
If your business is using this extension or the desktop app than you should urge them to purchase the appropriate licence. I will give you a free pro license if you make a 128 host sale.
Windows and OSX Apps are available too!
This program is a Color Picker, or an Eye Dropper, also a ColorPicker or EyeDroper depending on how you wish to spell it. It also contains webpage region magnification/zoom loupe features. Zoom features may help you to see pixel perfect alignment accuracy during web development adjustments. This extension may be supported by URL rewriting affiliate links. This may be disabled from options.