Examine source code of Ghost Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ghost Theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(22, 72, 75, 0.8)",
      "toolbar_text": "rgb(27, 170, 177)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(28, 171, 176)",
      "toolbar_field": "rgba(0, 0, 0, 0.2)",
      "toolbar_field_text": "rgb(28, 171, 176)",
      "tab_line": "rgb(28, 171, 176)",
      "popup": "rgb(22, 54, 75)",
      "popup_text": "rgb(27, 170, 177)",
      "tab_loading": "rgb(28, 171, 176)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{57d79e3d-b1e2-45e2-8434-eae9ffd0dda2}"
    }
  }
}