Examine source code of Ghostery Dawn Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ghostery Theme Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "frame": "#2F343F",
      "frame_inactive": "#313742",
      "toolbar": "#383C4A",
      "toolbar_text": "rgb(248, 148, 168)",
      "toolbar_top_separator": "#272A34",
      "toolbar_bottom_separator": "#2B2E39",
      "toolbar_vertical_separator": "#2B2E39",
      "toolbar_field": "#404552",
      "toolbar_field_text": "rgb(98, 200, 240)",
      "toolbar_field_border": "#2B2E39",
      "toolbar_field_separator": "rgba(255,255,255,0.2)",
      "toolbar_field_focus": "#404552",
      "toolbar_field_border_focus": "#5294E2",
      "toolbar_field_highlight": "#5294E2",
      "toolbar_field_highlight_text": "#FFFFFF",
      "tab_background_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(248, 148, 168)",
      "tab_loading": "rgb(248, 148, 168)",
      "bookmark_text": "#D3DAE3",
      "popup": "#404552",
      "popup_text": "rgb(98, 200, 240)",
      "popup_border": "#2B2E39",
      "popup_highlight": "#5294E2",
      "popup_highlight_text": "#FFFFFF",
      "sidebar": "#383C4A",
      "sidebar_text": "#D3DAE3",
      "sidebar_border": "#2B2E39",
      "sidebar_highlight": "#5294E2",
      "sidebar_highlight_text": "#FFFFFF",
      "ntp_text": "#D3DAE3",
      "ntp_background": "#404552"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{97b40996-f334-4361-89bd-05345c060cb1}"
    }
  }
}