The Golden Films have several traits that repeat throughout most of the films.
Most of the characters have either blonde or brown hair. A small percentage of the characters have black hair and less have red/orange hair. Female characters tend to have blonde hair and male characters have brown hair. Some villains have either black or red hair to separate them from the protagonists.
Most of the character has blue eyes, regardless of gender. Not many have brown, green or even grey eyes. There is a small percentage of characters that have black eyes, but those are associated with Native Americans, Asians and so forth.