Examine source code of esmariali

{
  "theme": {
    "images": {
      "theme_frame": "firefoxbluepinkstainedglass.jpg"
    },
    "colors": {
      "frame": "#664cd9",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "esmariali",
  "manifest_version": 2,
  "description": "Psychedelic stained glass. Multicolor, angular, abstract shapes in shades of pink, blue, red and navy blue."
}