YouTube is quietly working on a tweak to its video interface, marking perhaps the first major change in a decade. The player is getting a sleek new look, but more importantly, it will be transparent (the controls will appear only when you hover over the video.Google is still testing the tech, but you can already see it and try it out. LifeHacker has the skinny on how to change a simple line in the cookies for the site:Chrome users will need an extension like EditThisCookie to modify it. Install the extension, open up YouTube, and click the extension icon. Then, find the following cookie:VISITOR_INFO1_LIVEThen, change it’s value to the following:Q06SngRDTGAIt’s a small change, but a crucial one for the video giant. Head over and have a look.Source: LifeHackerJohn WenzWriterJohn Wenz is a Popular Mechanics writer and space obsessive based in Philadelphia. He tweets @johnwenz.