Gates when closed have to say, "Do Not Enter", that is their job. Open, however, is entirely different. They should be welcoming and easily findable. Not part of a continuing fence, they need to be distinctive and let you know that you have arrived.
I often put copper panels in my gates, sometimes lacquered to preserve the polish. I like what the sun does to copper. You can see it from a mile away. These panels are in my office, their lacquer finish is drying and my office is the only warm spot in my shop. It is a big entry, two eleven foot gates, each with two copper panels and a stainless steel panel in the center. I'll keep you posted on the progress.