The colors of an insulator can be changed digitally easily. This took me about 4 minutes to produce. Do you want an insulator to become teal when it's true color is aqua? - no problem. You can describe it as being aqua but it will look teal to a would be buyer that thinks the person selling it dosen't know what they are doing. I once bought a "blue" insulator on eBay that I was sure was cobalt blue. I played with the photo and was really convinced it was cobalt until I got it. It was aqua and the dealer said they didn't know what aqua was. If you look at the green one you will see that it has been repaired as well.