Examine source code of Rapid Fire

{
  "name": "Rapid Fire",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "download.jpg"
    },
    "colors": {
      "frame": "rgba(28, 89, 219, 1)",
      "tab_background_text": "rgba(237, 26, 26, 1)",
      "toolbar": "rgba(184, 74, 74, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(217, 84, 84, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  }
}