Examine source code of purple-blue1989

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "quillo",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(31, 34, 61)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(133, 33, 139)",
      "tab_background_text": "rgb(219, 229, 241)",
      "toolbar_field": "rgb(54, 58, 89)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(0, 174, 174)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(215, 226, 239)",
      "tab_loading": "rgb(0, 174, 174)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d933af1e-6c0b-43b2-9485-efc1d4f9b26c}"
    }
  }
}