If you're fed up with your default Series 60 interface then why not go for something a bit more exotic by installing Atmosphere.
This theme adds a stylish wallpaper to your home screen, featuring a silhouetted image of a tropical desert island. The thing that makes the picture so striking is the use of neon colored strips of orange, blue, purple and green that run down the screen. This helps to make for a truly striking display.
Atmosphere also changes lots of other areas of your system interface. For example, it adds a black analog clock skin (though this is rather boring), and replaces your menu icons with a set of shiny purple and silver buttons.
Unlike many of the tacky, garish S60 themes out there, Atmosphere has an elegance about it that shows that a lot of thought has gone into its design.