Color Palette for Carmen Opera Libretto:

1. Color Name: Flamenco Red
   Hex Code: 
                            
                            #FF0000
                        
   Description: This intense and vibrant red represents the passionate and fiery nature of Carmen, the opera's protagonist. It mirrors her seductive and rebellious personality.

2. Color Name: Bullfighter Black
   Hex Code: 
                            
                            #000000
                        
   Description: This deep black shade embodies the mystery and danger associated with the bullfighting arena, a significant element in the opera's plot. It symbolizes the tragic fate that awaits Carmen.

3. Color Name: Spanish Gold
   Hex Code: 
                            
                            #D4AF37
                        
   Description: This warm and luxurious gold shade represents the opulence and allure of Spain, the opera's setting. It signifies the flamboyant and extravagant lifestyle of the characters.

4. Color Name: Seville Orange
   Hex Code: 
                            
                            #FFA500
                        
   Description: This vibrant orange hue captures the lively atmosphere of Seville, the city where Carmen is set. It reflects the energetic and passionate nature of the opera's storyline.

5. Color Name: Midnight Blue
   Hex Code: 
                            
                            #191970
                        
   Description: This deep, dark blue color represents the night-time ambiance and secrecy that surrounds Carmen's actions. It denotes the tragic and mysterious events that occur under the cover of darkness.

6. Color Name: Rose Petal Pink
   Hex Code: 
                            
                            #FFB6C1
                        
   Description: This soft and delicate pink shade portrays the femininity and vulnerability of Carmen. It symbolizes her allure and charm, which captivate those around her.

This color palette captures the essence of Carmen's story, incorporating passionate reds, mysterious blacks, vibrant oranges, and luxurious golds, all inspired by the opera's themes, characters, and setting.