Examine source code of Scruff Fox

{
  "theme": {
    "images": {
      "theme_frame": "Header3.jpg"
    },
    "colors": {
      "frame": "#292929",
      "tab_background_text": "#0f0f0f"
    }
  },
  "version": "2.0",
  "name": "Scruff Fox",
  "manifest_version": 2,
  "description": "Clean and Scruffy Firefox based design."
}