Firefox is recently testing two new feature colour customization and split screen which users can try at the moment. Colour customization allows user to theme the browser with different colours you like, while split screen allow to view two different websites in one tab.These two feature are recently in Firefox’s Test Pilot program, which allows users to try new features in the form of extensions and decide whether it will be available in public in coming time.
Firefox Color Customization will allows users not only to change colour but also to customize various visual elements of the browsers which include background texture, text fronts, icons, toolbar and others. There also also few presets to try. users can also share there creations with others.
Split Screen or Side view is a unique feature which will allow users to view multiple tabs side by side in same widows instead of separate tabs. Which makes it more easy if you are doing a research or comparison between two or more products or shopping websites. It also lets you keep track of recent comparisons so you can quickly access pages you often reference.
You can check these and many others great features on Firefox Test Pilot Page.