Examine source code of Planet Jupiter

{
  "name": "Planet Jupiter",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "toolbar": "rgba(87, 48, 33, 0.33)",
      "toolbar_field": "rgba(163, 68, 8, 0.33)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "frame": "#000000",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)"
    }
  }
}