If you use Firefox browser, you might be familiar with add-ons and plugins. Actually, Firefox offers several plugins for the better and increased functionality. 'ColorZilla' is a plug-in from Firefox, which can be used for the better designing of your web-page. You can get the color readings of any point in the window and use this value to match with your text. This can increase your Google AdSense earnings by increasing your click-through rate. Read more about ColorZilla from the below link.