I can’t say I have seen the metallic accents on the 6G interior probably because I have not restored one with that interior. I have restored a couple of '68 XR-7 cars with the 6B interior and the blue definitely has a hint of metallic if the vinyl is not sun baked. On original panels I have tried to duplicate the sheen by spraying them with a fine mist of pearl paint - no color except the pearl.