Examine source code of HALFH

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "HALFH",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(42, 82, 112)",
      "toolbar_text": "rgb(24, 156, 180)",
      "frame": "rgb(14, 41, 65)",
      "tab_background_text": "rgb(24, 156, 180)",
      "toolbar_field": "rgb(38, 72, 102)",
      "toolbar_field_text": "rgb(67, 194, 218)",
      "tab_line": "rgb(252, 140, 17)",
      "popup": "rgb(7, 50, 84)",
      "popup_text": "rgb(24, 156, 180)",
      "tab_loading": "rgb(252, 140, 17)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{523d40c2-3057-4fad-83ea-e380b8dd75dd}"
    }
  }
}