Had to go look through my color books, the only matches I could find were:
274 - light green metallic, 1958 to 1960
861 - silver green metallic, 1973 +
881 - thistle , 1980+
I could not find any in-period metallic colors that matched, although with the computer monitor and small color chips, there is more than enough room for a block (or two!) of salt here.