Examine source code of Easy Purple Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ultra Violet",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(57, 29, 98)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(34, 10, 75)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(50, 56, 102)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(53, 27, 95)",
      "popup": "rgb(38, 17, 75)",
      "popup_text": "rgb(215, 226, 239)",
      "tab_selected": "rgb(67, 52, 103)",
      "tab_loading": "rgb(53, 27, 95)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c87301e3-26b3-4166-98c8-e119389110f1}"
    }
  }
}