Examine source code of Penguim Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Penguim Theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(17, 59, 61)",
      "toolbar_text": "rgb(247, 63, 89)",
      "frame": "rgb(9, 30, 43)",
      "tab_background_text": "rgb(247, 63, 89)",
      "toolbar_field": "rgba(0, 0, 0, 0.39)",
      "toolbar_field_text": "rgb(247, 63, 89)",
      "tab_line": "rgb(15, 112, 115)",
      "popup": "rgb(22, 54, 75)",
      "popup_text": "rgb(247, 61, 87)",
      "tab_loading": "rgb(15, 112, 115)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{03b13c55-d1c1-426e-af55-08524b258eb3}"
    }
  }
}