Examine source code of Ghibli Autumn

{
  "name": "Ghibli Autumn",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "alena-aenami-endless-1k.jpg"
    },
    "colors": {
      "frame": "rgba(28, 28, 38, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(5, 10, 10, 0.45)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(20, 24, 51, 0.65)",
      "toolbar_field_text": "rgba(250, 240, 245, 1)",
      "tab_line": "rgba(3, 3, 3, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dae23cb2-2303-411a-9057-d6adc690cfa6}"
    }
  }
}