Hi...I just got my C7 Shadow Grey a couple of months ago. I was puzzled when I first went to the dealer to order it...I had a sales brochure I'd picked up at the Feb Auto Show, and it showed Watkins Glen Grey as the colour in there. I guess GM changed it partway through 2019 - as others have said it's become a corporate wide colour on the Camaro, Silverado, Caddy SUV's, etc. I wasn't sure at first either...silver has always been my favourite vehicle colour hands down...my previous 2 Vette's were a 98 C5 in silver, and a 78 Silver Anniversary C3 half silver, half metallic grey. But since the C7 came out (in Shark Grey as you noted) it's always been the colour that I wanted. GM seems to have made a rotating door of grey's...I think there was another grey inbetween Shark & Watkins also. Anyway, yes in bright sunlight there is a blueish tinge...but in shade it looks more like a traditional metallic grey. I often 2nd guess myself as to whether I made the right choice, but in the end quite honestly I'm very happy with it. Good luck