Examine source code of AMOLED Android

{
  "name": "AMOLED Android",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "2019-10-04 13_29_13-Generar tema __ Centro de Desarrolladores __ Complementos para Firefox.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(240, 240, 240, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(240, 240, 240, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(240, 240, 240, 1)"
    }
  }
}