Examine source code of mother earth

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "earth",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(34, 40, 39, 0.29)",
      "toolbar_text": "rgb(1, 255, 125)",
      "frame": "rgb(5, 35, 20)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.21)",
      "toolbar_field_text": "rgb(0, 255, 217)",
      "tab_line": "rgb(9, 240, 159)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(248, 248, 255)",
      "button_background_active": "rgba(12, 140, 255, 0.67)",
      "button_background_hover": "rgba(44, 187, 243, 0.44)",
      "icons_attention": "rgba(255, 7, 60, 0.93)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgba(140, 204, 224, 0.78)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(41, 255, 255)",
      "popup_highlight": "rgba(76, 113, 229, 0.92)",
      "sidebar_highlight": "rgba(47, 95, 250, 0.92)",
      "sidebar_text": "rgb(6, 32, 44)",
      "tab_loading": "rgba(66, 229, 255, 0.67)",
      "toolbar_bottom_separator": "rgba(0, 255, 200, 0.67)",
      "toolbar_field_focus": "rgba(8, 48, 43, 0.31)",
      "toolbar_field_highlight_text": "rgb(3, 27, 24)",
      "toolbar_field_highlight": "rgba(48, 255, 138, 0.7)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c8d39fce-ddae-4106-93a4-2586f4b01294}"
    }
  }
}