This is great stuff. Good visual design and nice details.
But, i have two problems.
1. When i looked at the screenshot, i didn't expect it to be literally made of glass. This makes it very hard to use ontop of anything else. An option to toggle a solid color to it would fix this.
Second thing is minor. No stop button. There are occasions where a stop button IS necessary. There aren't a lot, and it's not really a showstopper, but nevertheless, stop button deserves some love too.
Thanks .. Theres will be many more of this kind of skin.. Im also considering to make a
"Color theme button" with about 10 diffent colors theme.
And a button to toggle transparent on and off (:
Another addition you might consider is a version with the plus buttons sliding to the top rather than the bottom. I like to place Xion just above my taskbar and it'd look much nicer that way.