Damn, thats one ugly OS setup.
Its using visualprefs and birdie. It is an RTG system, but aga can look equally ugly if its a look you want to recreate.
Really though its down to the user how good/bad a system looks. In the hands of someone with some skill aga is capable of nice things. This doesnt require high color either. 32, or even 16 colors and some artistic flare are capable of much nicer looking setup than whats in the image.
