Here’s a lighter version of the color palette for Google Sheets that maintains a fun and professional look while being more subtle in its hues.

 <Light Google Sheets Color Palette>
1. Sky Blue - 
                            
                            #A4C8E1
                         - A gentle and calming blue, ideal for headings and important data points.
2. Soft Cyan - 
                            
                            #B2E0E1
                         - A light cyan that adds a refreshing touch, perfect for highlighting significant information.
3. Pale Green - 
                            
                            #C4E1C4
                         - A soft green, great for positive metrics and growth indicators.
4. Light Peach - 
                            
                            #FFCCB3
                         - A soft peach that is warm and inviting, suitable for warnings or alerts needing attention.
5. Lavender - 
                            
                            #E6D6E3
                         - A light lavender that can be used for secondary data and accents while maintaining a professional feel.
6. Very Light Grey - 
                            
                            #F0F0F0
                         - A neutral light grey, excellent for background areas or secondary information to enhance readability.

This palette emphasizes lighter shades that are friendly and approachable while still being professional enough for business use.

Would you like to see any specific color combinations for different types of data? Or do you need additional options or variations?