Examine source code of Zodiac Moth

{
  "name": "Zodiac Moth",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Zodiac Moths.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(185, 200, 222, 1)",
      "toolbar": "rgba(186, 201, 222, 0.65)",
      "bookmark_text": "rgba(12, 26, 82, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(185, 200, 222, 1)"
    }
  }
}