Examine source code of Blue Archive GDDark

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Blue Archive GDDark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-029-cc9cab928c1799136d18758709e91ecc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(41, 48, 89)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(26, 38, 67)",
      "tab_background_text": "rgb(213, 229, 251)",
      "toolbar_field": "rgb(26, 38, 67)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(0, 210, 255)",
      "popup": "rgb(26, 38, 67)",
      "popup_text": "rgb(213, 229, 251)",
      "tab_loading": "rgb(0, 210, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c44d1649-0525-45de-a5d7-79ded7f65179}"
    }
  }
}