We have recently updated the RoundCube webmail client. The new version includes a brand new skin, codenamed “Larry”, which will be the default skin from now on. The old default skin, which is now labeled “Classic”, is still available. You can activate it by going to Settings > User Interface.
Aside from the skin change, the new version of the RoundCube webmail client comes with lots of bug fixes and background updates, so you will enjoy a smoother webmail experience.