Examine source code of Texas Fight

{
  "name": "Texas Fight",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "blank.png"
    },
    "colors": {
      "frame": "rgba(191, 87, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(51, 63, 72, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{771baa7e-0ba3-4006-b3d4-fe0d4517f633}"
    }
  }
}