Examine source code of Minimal ABS

{
  "name": "Minimal ABS",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "stripes-6528728.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(223, 223, 227, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(41, 73, 84, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(144, 171, 156, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eee7e515-ed65-4df7-8d37-49461cc4160c}"
    }
  }
}