Examine source code of Mountain High by M♥Donna

{
  "name": "Mountain High by M♥Donna",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(18, 131, 196, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(18, 127, 199, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(18, 127, 199, 0.08)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 252, 252, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{25b8827c-05ac-4013-9935-c76f60febb84}"
    }
  }
}