Examine source code of Space Glass

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Space Glass",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(18, 23, 53)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.1)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(255, 255, 255, 0)",
      "popup": "rgba(25, 25, 36, 0.88)",
      "popup_text": "rgb(215, 226, 239)",
      "icons_attention": "rgb(89, 234, 136)",
      "popup_border": "rgba(255, 255, 255, 0.1)",
      "tab_loading": "rgba(255, 255, 255, 0.8)",
      "tab_selected": "rgba(255, 255, 255, 0.3)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgba(18, 18, 18, 0.94)",
      "toolbar_field_border_focus": "rgb(106, 132, 170)",
      "toolbar_field_focus": "rgb(25, 25, 36)",
      "toolbar_field_highlight": "rgb(106, 132, 170)",
      "toolbar_top_separator": "rgba(37, 37, 37, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fbea6e85-9255-49ce-9759-17d589b250b2}"
    }
  }
}