Chocolate is just a black bird underneath and its a simple sex linked gene.
So pullets either have a chocolate gene and are chocolate or they don't and ain't chocolate.
Pullets get their gene from their fathers. Mothers have no impact on them and they only pass their gene to their sons.
There is no show standard for a mauve chicken.
Chickens are shown by breed. And split into varieties of the breed.
Mauve orpingtons are not a recognized variety.
And as far as I know there is no breed that mauve is a recognized color.
Chocolate rooster x chocolate + blue hen = 1/2 cockerels mauve
Chocolate + blue rooster x chocolate hen = 1/2 cockerels mauve
Chocolate rooster x chocolate + splash hen = all cockerels mauve
Chocolate + splash x chocolate hen = all cockerels mauve
Chocolate + blue rooster x chocolate + blue hen...