Examine source code of 23win

{
  "name": "vibrant water-inspired theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "3fcfc60f0b73f8c8e922d3de913ea4fb.jpg"
    },
    "colors": {
      "frame": "rgba(11, 132, 153, 1)",
      "tab_background_text": "rgba(231, 172, 232, 1)",
      "bookmark_text": "rgba(117, 17, 115, 1)",
      "toolbar_field": "rgba(117, 17, 115, 1)",
      "toolbar_field_text": "rgba(231, 172, 232, 1)",
      "tab_line": "rgba(117, 17, 115, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3e2dd6a3-0b20-4c9f-adc5-725967ea6deb}"
    }
  }
}