Examine source code of Googliest

{
  "name": "Googliest",
  "manifest_version": 2,
  "version": "12.0",
  "theme": {
    "images": {
      "theme_frame": "FirefoxThemeHeader.png"
    },
    "colors": {
      "frame": "rgba(49, 115, 229, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(249, 249, 250, 1)",
      "toolbar_field": "rgba(240, 63, 57, 1)",
      "toolbar_field_text": "rgba(123, 191, 122, 1)"
    }
  }
}