Examine source code of ninto's fox

{
  "name": "ninto's fox",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "1232849758499.jpg"
    },
    "colors": {
      "frame": "rgba(0, 20, 59, 1)",
      "tab_background_text": "rgba(38, 166, 51, 1)",
      "toolbar": "rgba(46, 46, 46, 0.28)",
      "toolbar_field": "rgba(89, 89, 89, 0.87)",
      "toolbar_field_text": "rgba(0, 7, 107, 1)",
      "tab_line": "rgba(0, 255, 0, 0.33)"
    }
  }
}