Examine source code of Zero Two

{
  "name": "Zero Two",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "tema.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 0.42)",
      "toolbar": "rgba(33, 33, 33, 0)"
    }
  }
}