Examine source code of Earth animated theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Earth animated theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(6, 21, 40, 0.63)",
      "toolbar_text": "rgb(248, 248, 244)",
      "frame": "rgb(18, 55, 94)",
      "tab_background_text": "rgb(165, 121, 4)",
      "toolbar_field": "rgba(0, 7, 14, 0.99)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(4, 24, 251)",
      "popup": "rgb(17, 57, 100)",
      "popup_text": "rgb(248, 248, 244)",
      "button_background_active": "rgb(23, 33, 145)",
      "button_background_hover": "rgb(70, 98, 140)",
      "icons_attention": "rgb(5, 227, 34)",
      "icons": "rgb(4, 255, 66)",
      "popup_border": "rgb(4, 57, 251)",
      "tab_selected": "rgba(126, 127, 131, 0.69)",
      "tab_text": "rgb(248, 241, 241)",
      "toolbar_field_border": "rgb(145, 134, 137)",
      "toolbar_field_focus": "rgba(23, 2, 189, 0.02)",
      "toolbar_top_separator": "rgb(4, 24, 251)",
      "tab_loading": "rgb(4, 24, 251)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3954ebf2-cf60-4418-9c44-97187dd6d740}"
    }
  }
}