It''s a refreshing change. Windows include Browsers, File List, ChangeList, ChangeSorter, Debugger, and Workspace.
Option is contolled by browser preference alternateBrowserColors.
Also, optional buttons are added to the change list browser. The fixed pane scheme has been added to many of the remaining browsers, debugger and other tools. I do not know if I got them all. Added a preference controlled option to include a variables pane in Browsers.