Microsoft Bing is testing a bit more color in its Bing Search outcomes interface. When you mouse over a hyperlink, Bing may color that link orange as opposed to simply keeping it blue and then highlighting the link. Here is a GIF of it in action from Frank Sandtmann, an German based SEO: I personally do not see this, all I see is the blue underlined link on mouse hover over, however this does include a bit more of a revitalizing color to the Bing results.Forum conversation at Twitter.