Examine source code of Strange Galaxy

{
  "manifest_version": 2,
  "version": "1.2",
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "92.0"
    }
  },
  "icons": {
    "48": "images/icon.png",
    "96": "images/icon@2x.png"
  },
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(35, 42, 88, 0.5)",
      "toolbar_text": "rgb(215, 226, 239)",
      "frame": "rgb(22, 26, 55)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgba(137, 139, 153, 0.18)",
      "toolbar_field_text": "rgb(215, 226, 239)",
      "tab_line": "rgba(76, 221, 255, 0)",
      "popup": "rgb(66, 71, 91)",
      "popup_text": "rgb(229, 241, 255)",
      "button_background_active": "rgba(215, 226, 239, 0.3)",
      "button_background_hover": "rgba(215, 226, 239, 0.18)",
      "frame_inactive": "rgb(22, 26, 55)",
      "icons_attention": "rgb(76, 221, 255)",
      "icons": "rgb(215, 226, 239)",
      "ntp_background": "rgb(38, 38, 44)",
      "ntp_text": "rgb(215, 226, 239)",
      "popup_border": "rgba(35, 42, 88, 0)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(0, 120, 215)",
      "sidebar_border": "rgb(35, 42, 88)",
      "sidebar_highlight_text": "rgb(76, 221, 255)",
      "sidebar_highlight": "rgb(35, 42, 88)",
      "sidebar_text": "rgb(215, 226, 239)",
      "sidebar": "rgb(22, 26, 55)",
      "tab_background_separator": "rgb(215, 226, 239)",
      "tab_loading": "rgb(0, 120, 215)",
      "tab_selected": "rgba(105, 99, 138, 0.5)",
      "tab_text": "rgb(76, 221, 255)",
      "toolbar_bottom_separator": "rgba(215, 226, 239, 0.3)",
      "toolbar_field_border_focus": "rgba(215, 226, 239, 0.3)",
      "toolbar_field_border": "rgba(204, 214, 230, 0.32)",
      "toolbar_field_focus": "rgb(35, 42, 88)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(0, 120, 215)",
      "toolbar_field_text_focus": "rgb(215, 226, 239)",
      "toolbar_top_separator": "rgba(35, 42, 88, 0.3)",
      "toolbar_vertical_separator": "rgba(215, 226, 239, 0.5)"
    }
  }
}