Examine source code of multicolored spiral

{
  "name": "2d4686eb5e28a5396032c9c2816ae223",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "2d4686eb5e28a5396032c9c2816ae223.jpg"
    },
    "colors": {
      "frame": "rgba(232, 233, 235, 0.18)",
      "tab_background_text": "rgba(255, 252, 252, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.36)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8bca52b5-5338-4bf7-ba16-756030e1f4d7}"
    }
  }
}