Final answer:
Green Goddess Dressing is the colorful dressing created at the Palace Hotel in San Francisco, known for its herb-based green color and named after a play.
Step-by-step explanation:
The colorful dressing with parsley, chives, and tarragon that was created at the Palace Hotel in San Francisco is known as Green Goddess Dressing. This flavorful and vibrant dressing owes its name to its distinctive green hue, which comes from the various herbs used in its preparation. Invented in the early 1920s, it was named after the play 'The Green Goddess' by William Archer.