Examine source code of Dark Violet Fractal

{
  "name": "Dark Violet Fractal",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "KD-Fractal.png"
    },
    "colors": {
      "frame": "rgba(69, 22, 109, 1)",
      "tab_background_text": "rgba(164, 110, 196, 1)",
      "toolbar": "rgba(73, 22, 112, 0.55)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(28, 3, 51, 0.75)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(87, 31, 128, 0.55)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9ea70608-3170-41bb-a580-5499239b972d}"
    }
  }
}