Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Change background color to vibrant rainbow gradient. portrait of Cookie Monster in Society (1989), highly detailed, centered, solid color background, digital painting, artstation, concept art, smooth, sharp focus, illustration, artgerm, donato giancola, Joseph Christian Leyendecker, Les Edwards, Ed Repka, WLOP

### Response:
portrait of Cookie Monster in Society (1989), highly detailed, centered, vibrant rainbow gradient background, digital painting, artstation, concept art, smooth, sharp focus, illustration, artgerm, donato giancola, Joseph Christian Leyendecker, Les Edwards, Ed Repka, WLOP

### End