<Pastel Time Slot Colors>
1. 9 - 5 Shift - 
                            
                            #A5D6A7
                         - A soft pastel green representing the 9 to 5 shift, symbolizing energy and freshness throughout the day.
2. 10 - 6 Shift - 
                            
                            #B2EBF2
                         - A lovely pastel aqua blue for the 10 to 6 shift, conveying a sense of calm and a cheerful vibe during late morning to evening.
3. 12 - 8 Shift - 
                            
                            #FFAB91
                         - A light pastel orange for the 12 to 8 shift, embodying enthusiasm and warmth for the later part of the day.
4. Off Shift - 
                            
                            #E0E0E0
                         - A light grey for the off time slot, providing a neutral tone that complements the pastel colors of the active shifts.

This refined pastel color palette includes a more cheerful aqua blue, enhancing the cuteness and overall appeal while keeping it easy to distinguish between shifts.

Would you like to see more variations, or are there any other specific aspects you’d like to focus on for your design?