~ I had a similar situation with Aero-Blue as well as the Silver Sapphire blue. The paint store was unable to match the color or cross reference it properly and upon test spray out, neither color matched.
~ So, the paint store took out their "paint reader device" and I had them read from under the hood, a sample area that was not faded, and did not have clear coat on it.
~ They mixed according to what their computer said, I took it home and did another test spray out and it was a beautiful match for both colors.