Examine source code of Deep Space

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Deep Space",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(159, 255, 227, 0.3)",
      "toolbar_text": "rgb(238, 204, 224)",
      "frame": "rgb(19, 23, 25)",
      "tab_background_text": "rgb(238, 238, 238)",
      "toolbar_field": "rgb(19, 23, 25)",
      "toolbar_field_text": "rgb(238, 238, 238)",
      "tab_line": "rgba(238, 204, 224, 0.5)",
      "popup": "rgb(30, 36, 39)",
      "popup_text": "rgb(238, 238, 238)",
      "icons_attention": "rgb(159, 255, 227)",
      "popup_border": "rgb(238, 204, 224)",
      "toolbar_field_border_focus": "rgb(238, 204, 224)",
      "toolbar_field_highlight": "rgba(238, 204, 224, 0.5)",
      "toolbar_vertical_separator": "rgb(238, 204, 224)",
      "tab_loading": "rgba(238, 204, 224, 0.5)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b25c271d-bab4-4c0f-8865-f3d9eea95947}"
    }
  }
}