Examine source code of Playful/Childish Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Playful",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(225, 234, 239)",
      "toolbar_text": "rgb(0, 103, 255)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(22, 255, 0)",
      "tab_line": "rgb(0, 13, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(1, 21, 121)",
      "tab_loading": "rgb(0, 13, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{82bf4812-51a1-401f-a6e8-d48baaba3791}"
    }
  }
}