Examine source code of peacock

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "peacock",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(22, 72, 75, 0)",
      "toolbar_text": "rgb(12, 243, 143)",
      "frame": "rgb(0, 14, 14)",
      "tab_background_text": "rgb(194, 214, 247)",
      "toolbar_field": "rgba(0, 0, 0, 0.21)",
      "toolbar_field_text": "rgb(251, 131, 165)",
      "tab_line": "rgb(28, 176, 80)",
      "popup": "rgba(1, 78, 63, 0.94)",
      "popup_text": "rgb(210, 147, 164)",
      "button_background_active": "rgba(5, 5, 222, 0.98)",
      "button_background_hover": "rgba(156, 2, 15, 0.97)",
      "icons_attention": "rgb(100, 230, 230)",
      "icons": "rgb(201, 6, 232)",
      "ntp_background": "rgba(2, 54, 34, 0)",
      "ntp_text": "rgba(38, 234, 150, 0)",
      "popup_border": "rgb(207, 17, 70)",
      "popup_highlight_text": "rgba(192, 4, 221, 0.96)",
      "popup_highlight": "rgb(192, 17, 65)",
      "tab_selected": "rgba(59, 0, 116, 0.96)",
      "tab_text": "rgba(3, 157, 28, 0.96)",
      "tab_loading": "rgb(28, 176, 80)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e520684e-7fa3-4f3c-932e-f09bf95015e4}"
    }
  }
}