Examine source code of A by M♥Donna

{
  "name": "A by M♥Donna",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "A Theme.jpg"
    },
    "colors": {
      "frame": "rgba(246, 201, 200, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(247, 203, 201, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(247, 203, 201, 0.08)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c7deddc-6fe2-47b6-b4ac-14664baafdef}"
    }
  }
}