Version that does not remove the Cat:
http://freestyler.ws/style/87697/coinchat-org-dark-theme

Notes:
-Webkit scrollbars will only work in webkit-capable browsers (Safari, Chrome). After applying this theme for the first time, the page must be refreshed for the scrollbars to change.
-Screenshots were taken in Chrome. This theme has not been tested in Firefox.
-This theme fixes the not-allowed cursor type on the "Link to this Room" text box.
-To ensure readability, user-selected colors of other chatters will not be displayed. Your own color will still be displayed, but keep in mind that most other chatters will have the default light template and may not be able to see your selected color as well as you can.

If you enjoy this theme, donations are greatly appreciated at:
http://1v.io/GSlayerBrian or 1Q9NTpKy3Pe4Vj6c1GKMxeJEX4uP58oB1p