Keep it Frost Green!
We have two Mosport Green Corvettes...
Very similar shade to Frost Green!
We also have a 1972 Nova SS in Silver Green which is on the silver side of Frost Green.
Frost green is created with a combination of blue, silver and yellow.
When you alter the shades of blue, and silver, you get all the shades in between Cortez Silver and Frost Green.
Spent a long while talking to my paint guy about this. Frost Green is such a period correct color! Leave it alone!