Great job Jag for finding this, and we also extend our thanks to our colleagues at the Corvette Action Center for this information! Much appreciated.
We know have confirmation of earlier suggestions that there will be 12, 2019 C7 colors.
The two new 2019 colors ones are: Dark Shadow Metallic (P/C # GJI), though that is its GM internal name; we will soon learn what it is called as a Corvette color.
The second new 2019 color is called Rhythm & Blue Metallic (P/C # GS7), again GM’s internal name for it.
The remaining 10 colors for 2018 continue. A quick translation for internal vs. external color names for the non-obvious ones:
High Voltage Orange is Sebring Orange;
Limited Addictiion Red is Long Beach Red;
Son Of A Gun Gray is Watkins Glen Gray Metallic;
Opulent Blue is Adrenaline Blue;
Switchblade Silver is Blade Silver.
And now we await for the November 20th release of the full Order Guide including the additional/new material on the ZR1. However, as the 12 colors are the announced max capability for the new paint shop, sorry for those ZR1 purchasers who were hoping for it to have a unique color.