Examine source code of asl header one piece

{
  "name": "asl header one piece",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "asl header.png"
    },
    "colors": {
      "frame": "rgba(0, 81, 255, 1)",
      "tab_background_text": "rgba(191, 191, 191, 1)",
      "toolbar": "rgba(145, 145, 145, 0.31)",
      "bookmark_text": "rgba(186, 186, 186, 1)",
      "toolbar_field": "rgba(194, 194, 194, 0.1)"
    }
  }
}