Examine source code of Dark Mouse

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#080b1c",
      "tab_background_text": "#cccccc"
    }
  },
  "version": "2.0",
  "name": "Dark Mouse",
  "manifest_version": 2,
  "description": "Just a dark theme for my personal use. I use this on Xfce with an entirely black panel and no title bar, so the tab area merges with the panel and the visual clutter is greatly reduced."
}