The metacity titlebar is different and the window border is different and wider in this theme. The menubar, toolbar and panel are different. Also, the scrollbars are slighly shiny compared to matt. All of the remaining elements are the same. In my themes, I try to keep the pixmap count as low as possible, whilst trying to create something with visual appeal. This does create a limitation for me and that is part of my challenge. Most of my later themes share many elements but I believe they each have their own look and feel. I may be biased but I don't believe I could mistake Black velvet with Ink pool.