Color Palette:

1. Music (red): 
                            
                            #FF4136
                        
   - Description: Represents passion, energy and creativity in electronic music production and hip hop.

2. Planning (blue): 
                            
                            #0074D9
                        
   - Description: Symbolizes organization and strategy, essential for scheduling and planning activities in Google calendar.

3. Working out (orange): 
                            
                            #FF851B
                        
   - Description: Reflects vitality and motivation during workout sessions, providing a burst of energy and enthusiasm.

4. Consuming information (purple): 
                            
                            #B10DC9
                        
   - Description: Signifies a sense of curiosity and learning, perfect for absorbing knowledge through books, videos and other resources.

5. Coding (green): 
                            
                            #2ECC40
                        
   - Description: Represents growth, innovation and logic, essential for programming and AI development in the university studies.

6. General (gray): 
                            
                            #AAAAAA
                        
   - Description: A neutral color that provides a balanced and harmonious backdrop for other activities, such as school, notes, details, tasks, writing essays, and eating.

This color palette is carefully curated to ensure that the colors complement each other, allowing for seamless and visually appealing stacking in the Google calendar interface.