Examine source code of Darkest Tiberium

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Tiberium",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(36, 36, 36)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(188, 188, 188)",
      "toolbar_field": "rgb(22, 22, 22)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(0, 255, 0, 0)",
      "popup": "rgb(22, 22, 22)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(55, 155, 55)",
      "button_background_hover": "rgb(14, 70, 14)",
      "frame_inactive": "rgb(0, 0, 0)",
      "icons_attention": "rgb(55, 155, 55)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(22, 22, 22)",
      "popup_border": "rgba(22, 22, 22, 0)",
      "sidebar_border": "rgba(0, 0, 0, 0)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(14, 70, 14)",
      "tab_loading": "rgb(255, 255, 255)",
      "tab_selected": "rgb(14, 70, 14)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f37a2d86-b6c8-4c4d-b4ee-8211cf393cab}"
    }
  }
}