This is an IceWM window decoration/theme I made a few months back. Being my first production theme, it took me a few days to make it, but I've been using it since then.
My goal was to make a simple, useful, professional and fast desktop. The window buttons disappear on inactive windows as you don't really need them. With "focus follows mouse" enabled this creates a really uncluttered look.
Of course, this theme would be useless without the corresponding Gnome and KDE themes. For a unified look, you can use GTK (Gnome) 3000_xeno, xeno_Discrete or Sunshine GTK theme and KDE's Light Style (2nd or 3rd revision).
I think there are some settings that I may have forgotten (like the colour of the logout window in IceWM.)
Let me know what you think and I'll try to polish it some more.