Examine source code of 23~2

{
  "name": "23~2",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "_22_high-school-dxd-anime-4k-pc-wallpapers_143159582.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(117, 26, 26, 1)",
      "tab_line": "rgba(10, 130, 10, 1)"
    }
  }
}