Was recently discussing this producer..I had the impression from somewhere down the line that the color of leaf on the label signified the "class" so to speak, of that varietal/vintage. There are gold, silver and copper leaves, if memory serves me (which it rarely does these days

) I've googled and searched and cannot find information to confirm or dispel this theory. If anyone would know, YOU would. What is the story behind the leaf color?
TIA,
JuliaB