Examine source code of salmooon

{
  "name": "salmon",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot_2020-05-16 Códigos de Colores HTML.png"
    },
    "colors": {
      "frame": "rgba(255, 189, 175, 1)",
      "tab_background_text": "rgba(117, 117, 117, 1)",
      "toolbar": "rgba(252, 226, 219, 1)",
      "bookmark_text": "rgba(173, 173, 173, 1)",
      "toolbar_field": "rgba(255, 225, 218, 1)",
      "toolbar_field_text": "rgba(128, 128, 128, 1)"
    }
  }
}