YouTube has had a revamped look for channels in limited beta testing since early February, but it's now ready to spread the new-layout love to interested folks. Dubbed "One Channel," the design refresh places an emphasis on making a user's page look slick across different screen sizes and devices, adapting its style for the occasion -- yes, even on TVs. Along with a look that provides more visual breathing room, a wide image called Channel Art adorns the top of a page, giving the whole affair a stronger Google+ vibe. Now, channel owners can even snag a visitor's attention with a trailer that'll greet them if they aren't a subscriber. The refresh also introduces the ability to organize video playlists with custom sections. Raring to take Mountain View up on the fresh looks? Jab the second source link to get started. If you change your mind after taking the plunge, however, Google's letting users switch back to the old format for a limited time.