Examine source code of Mothers__Day

{
  "name": "Mothers__Day",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "MothersDayVintageH.jpg"
    },
    "colors": {
      "frame": "rgba(201, 184, 161, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(204, 188, 163, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(204, 188, 163, 0.07)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4b1a008c-2e5d-452a-a799-d546492b0cdd}"
    }
  }
}