Obsidian was the first skin based on the Krystalware architecture and uses a black glass bar.  It features matching black containers along with the standard gray-scale ones.  (See Krystalware containers.)  Serious flexibility and design options:  you have a total of 50 containers.  To learn more about the skin layouts and container features please review the Krystalware  information available here:  KrystalWare 

Obsidian KrystalWare  color shadings.

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