Goldy is a derived term of goldilocks.

As a noun goldilocks

is a person with golden hair, especially a girl with long hair.

As a proper noun Goldilocks

is the protagonist of a traditional fairy tale. She is a golden-haired young girl who inquisitively enters a house belonging to three bears and tries their three bowls of porridge, three chairs, and three beds, in each case finding only one that suits her.

As an adjective goldy is

golden.