Examine source code of Asa the War Devil

{
  "name": "Asa the War Devil",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot 2023-12-29 at 1.18.12 PM.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(130, 130, 130, 1)",
      "toolbar": "rgba(48, 48, 48, 0.46)",
      "bookmark_text": "rgba(219, 219, 219, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(199, 199, 199, 1)",
      "tab_line": "rgba(87, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f59fc17b-dc35-4f52-9bd0-03ac8e62fb8a}"
    }
  }
}