Examine source code of Eva-01 Sunset

{
  "name": "Eva-01 Sunset",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "ultrawide-evangelion-wallpapers.png"
    },
    "colors": {
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(236, 197, 65)",
      "toolbar": "rgba(255, 255, 255, 0)",
      "bookmark_text": "rgba(255, 255, 255, 0.8)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "toolbar_field_text": "rgba(234, 198, 183, 0.81)",
      "tab_line": "rgba(248, 112, 140, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9c939ab-47e6-4faa-b9c6-7c56ae2c2e29}"
    }
  }
}