Another visually appealed style I would like to feature is Polyester from mart. It joins another interesting KDE styles with also interesting names (remember Liquid, Keramik, Plastik?). Polyester has a matching window decoration and some choices of color schemes.
The distinct look of this style is the glass rendering of push buttons, combo box, tab bar, menu bar, list view header, and even window titlebar. Nice, isn't it?