Examine source code of Blue Fire

{
  "name": "Blue Fire",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "blue fire.jpg"
    },
    "colors": {
      "frame": "rgba(0, 77, 255, 0)",
      "tab_background_text": "rgba(217, 255, 3, 1)",
      "toolbar": "rgba(26, 0, 255, 0.31)",
      "bookmark_text": "rgba(255, 3, 3, 1)",
      "toolbar_field": "rgba(0, 4, 255, 1)",
      "toolbar_field_text": "rgba(255, 3, 3, 1)",
      "tab_line": "rgba(3, 45, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0026ee71-6ae9-4f73-a783-2ffa6ca4400c}"
    }
  }
}