Examine source code of Dark Spray

{
  "name": "Dark Spray",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "wallpapersden.com_demon-black-clover_2048x1152.jpg"
    },
    "colors": {
      "frame": "rgba(62, 105, 199, 1)",
      "tab_background_text": "rgba(255, 0, 0, 1)",
      "toolbar": "rgba(13, 13, 13, 1)",
      "bookmark_text": "rgba(255, 0, 0, 1)",
      "toolbar_field": "rgba(38, 38, 38, 1)",
      "toolbar_field_text": "rgba(255, 0, 0, 1)"
    }
  }
}