The early V8 Vantage came with a silly-long antenna. Luckily, replacing it with a short antenna is easy and inexpensive. The drastic reduction in antenna height makes the antenna far less noticeable, even though the antenna has a different finish than the base.
This antenna only applies to the '06-07 V8 Vantage. The '08+ V8 Vantage has an internal antenna so this is a non-issue on those cars.
The shorty antenna is super easy to install. Here's a video showing it.