Examine source code of Unicorn rain

{
  "name": "Unicorn rain",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "rainy unicorn.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(221, 196, 230, 1)",
      "toolbar": "rgba(247, 244, 244, 0.38)",
      "bookmark_text": "rgba(240, 163, 163, 1)",
      "toolbar_field": "rgba(220, 238, 245, 1)",
      "toolbar_field_text": "rgba(100, 93, 163, 1)"
    }
  }
}