<Soft Christmas Themed Colors for Spreadsheet and Dropdown> 
1. Header Color - Soft Evergreen - 
                            
                            #A2BFA0
                         - A gentle green that serves as a calming header, ensuring strong contrast for black text.
2. Alternating Row Color 1 - Dusty Rose - 
                            
                            #EAB8C8
                         - A soft, muted rose that adds a touch of warmth while being easy on the eyes.
3. Alternating Row Color 2 - Light Sage - 
                            
                            #D1EEDD
                         - A subtle sage green that complements the dusty rose and enhances readability.
4. Dropdown Color 1 - Festive Red - 
                            
                            #C72A2A
                         - A classic Christmas red that stands out for important selections.
5. Dropdown Color 2 - Deep Forest Green - 
                            
                            #2F6D26
                         - A rich green that offers a strong contrast for clarity and visibility in dropdown options.
6. Dropdown Color 3 - Soft Gold - 
                            
                            #E8B54D
                         - A warm gold that adds a touch of elegance and festivity to your dropdown menu.
7. Dropdown Color 4 - Winterberry - 
                            
                            #8D4D6B
                         - A muted berry color that adds diversity and warmth, complementing the other dropdown colors. 

This revised palette features softer colors for the alternating rows while maintaining a festive Christmas theme. The dusty rose and light sage provide a gentle and inviting contrast that enhances readability for black text.

Would you like to see any further adjustments, or do you have specific applications for these colors in mind?