Examine source code of OffGun

{
  "name": "OffGun",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Diseño sin título.png"
    },
    "colors": {
      "frame": "rgba(218, 222, 230, 0.92)",
      "tab_background_text": "rgba(119, 199, 133, 1)",
      "toolbar": "rgba(143, 224, 157, 0.41)",
      "bookmark_text": "rgba(68, 207, 50, 0.86)",
      "toolbar_field": "rgba(173, 224, 112, 0.57)",
      "toolbar_field_text": "rgba(57, 158, 97, 1)"
    }
  }
}