Aqua was kept so tightly under wraps, that it was clear that the Adobe and Macromedia executives who came on to endorse OS X had never seen the new interface before this point. Adobe's Bruce Chizen seemed dazzled and at a loss for words. Every thing you see here, you want. 3-D, round, translucent, and colored. Okay buttons pulsate, and menus are translucent and fade out when you let go of them.
Windows are also translucent and have drop shadows.
The windows also have new capabilities. You can put a non-active window away without bringing it to the front. Save screens are no longer model dialog boxes, but scroll down from a window's title bar. There are three jewel-like buttons on window title bars for closing, maximize, and minimizing the window. It rolls up from the bottom of the display when you move your cursor there, or you can have it displayed full time.