Examine source code of FractalArt No.01

{
  "name": "FractalArt No.01",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "fractalART-01.png"
    },
    "colors": {
      "frame": "rgba(102, 102, 102, 1)",
      "tab_background_text": "rgba(212, 212, 212, 1)",
      "toolbar": "rgba(0, 0, 0, 0.33)",
      "bookmark_text": "rgba(230, 230, 230, 1)",
      "toolbar_field": "rgba(117, 117, 117, 0.46)",
      "toolbar_field_text": "rgba(230, 230, 230, 1)",
      "tab_line": "rgba(153, 132, 25, 0.58)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8db7c80-1432-4772-901f-7eb2131d5e87}"
    }
  }
}