Examine source code of Anpanman

{
  "name": "Anpanman",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled design.png"
    },
    "colors": {
      "frame": "rgba(153, 184, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(161, 66, 255, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{79c80750-d629-43a8-9d4b-ffc83d46b6ad}"
    }
  }
}