I don't have the Dolphin gauges, but have the sister set from the same manufacturer. Mine are labeled "Shark". White face, black numbers and orange pointers. They have been in for many years and have always worked great. After a few years of use I changed fuel sender (from 90 to 30 ohms). I called the company (local to me in FL) and asked about buying a new 30 ohm gauge to match the sender. They said bring it by and we will convert it to the new ohm requirement. Did it while it was there and charged way less than I expected. Only thing I don't like about them is the speedo light is a different color white than the other gauges.