Examine source code of Pokemon - Blue Dark Theme

{
  "manifest_version": 2,
  "version": "1.3",
  "name": "Pokemon - Blue Dark Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom",
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat"
      ]
    },
    "colors": {
      "frame": "#0d111a",
      "tab_background_text": "#cfe1fc",
      "frame_inactive": "#15151c",
      "toolbar": "transparent",
      "toolbar_text": "#f1f7ff",
      "toolbar_field": "#1c2435fe",
      "toolbar_field_text": "#e5e5e6",
      "toolbar_top_separator": "#77AAFF",
      "toolbar_vertical_separator": "#4B6BA1",
      "bookmark_text": "#d3d3d3",
      "toolbar_field_border": "transparent",
      "toolbar_field_focus": "#1c2435fe",
      "toolbar_field_border_focus": "transparent",
      "toolbar_field_text_focus": "#f1f7ff",
      "button_background_active": "rgba(119, 170, 255, 0.3)",
      "button_background_hover": "rgba(98, 108, 124, 0.27)",
      "icons": "#518CED",
      "icons_attention": "#0564ff",
      "ntp_background": "#111520",
      "ntp_text": "#f1f7ff",
      "ntp_card_background": "rgba(27, 32, 44, .7)",
      "popup": "#151b28",
      "popup_text": "#f1f7ff",
      "popup_border": "#38486b",
      "popup_highlight": "#3e3bcd",
      "sidebar": "#0a0e18",
      "sidebar_text": "#d3d8db",
      "sidebar_border": "#151b28",
      "sidebar_highlight": "#312f83",
      "sidebar_highlight_text": "#EEEEEE",
      "tab_line": "#518CED",
      "tab_selected": "#1d2639",
      "tab_loading": "#4d4dfe",
      "tab_loading_inactive": "#4d4dfe",
      "tab_text": "#85aff2"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dab760a2-f4cd-42cb-9715-e02960e1e28f}"
    }
  }
}