Apologies for the delay! Here’s a colder and more modern color palette with seven shades each for green, red, and blue.

 <Modern Cold Solarized Budget Tracking>
1. Green1 - 
                            
                            #008C74
                         - A cool teal, ideal for positive budget tracking items with a modern feel.
2. Green2 - 
                            
                            #4D9C6D
                         - A muted sage green, great for mild positive values.
3. Green3 - 
                            
                            #5BC0B0
                         - A soft mint green, suitable for neutral budget items.
4. Green4 - 
                            
                            #007A33
                         - A deep emerald green, perfect for significant savings.
5. Green5 - 
                            
                            #A0D3D0
                         - A light aqua green, effective for minor positive adjustments.
6. Green6 - 
                            
                            #B3E1E3
                         - A pale seafoam, excellent for low-impact positive values.
7. Green7 - 
                            
                            #009B77
                         - A bright teal green, perfect for emphasizing exceptional gains.

8. Red1 - 
                            
                            #C62828
                         - A cool crimson, ideal for highlighting expenses or negative values.
9. Red2 - 
                            
                            #D32F2F
                         - A modern burgundy, suitable for moderate budget concerns.
10. Red3 - 
                            
                            #FF5252
                         - A soft rose red, effective for cautionary expenses.
11. Red4 - 
                            
                            #D50032
                         - A bright cherry red, great for significant overspending.
12. Red5 - 
                            
                            #F8BBD0
                         - A muted pink, perfect for minor budget alerts.
13. Red6 - 
                            
                            #B00020
                         - A deep ruby red, ideal for alarming negative values.
14. Red7 - 
                            
                            #FF6F61
                         - A pastel salmon red, effective for drawing attention to critical issues.

15. Blue1 - 
                            
                            #2962FF
                         - A bright cobalt blue that can be used for headers or important budget categories.
16. Blue2 - 
                            
                            #1976D2
                         - A cool azure, suitable for major income entries.
17. Blue3 - 
                            
                            #0D47A1
                         - A deep navy blue, great for highlighting primary budget totals.
18. Blue4 - 
                            
                            #2196F3
                         - A soft cerulean blue, effective for secondary categories.
19. Blue5 - 
                            
                            #90CAF9
                         - A light sky blue, perfect for minor adjustments or notes.
20. Blue6 - 
                            
                            #BBDEFB
                         - A very pale blue, ideal for low-impact budget items.
21. Blue7 - 
                            
                            #E1F5FE
                         - A soft ice blue, suitable for background elements or less critical data.

The Modern Cold Solarized Budget Tracking palette features cooler tones, creating a clean and contemporary look for your budget tracker. The colors are designed to be bold yet calming, allowing for easy distinction between various budget categories.

Would you like to explore any specific color combinations, or do you need tips on how to visually implement this palette in your Excel tracker? Additionally, are there any other specific styles or effects you have in mind for your budget tracking?