<Solar Energy Sales Calculator with Red Accent> 
1. Solar Yellow - 
                            
                            #F6D02F
                         - A bright, cheerful yellow that evokes sunlight and energy.
2. Sky Blue - 
                            
                            #87CEEB
                         - A calm blue reminiscent of clear skies, promoting a sense of trust and reliability.
3. Grass Green - 
                            
                            #4CAF50
                         - A vibrant green that symbolizes growth and sustainability, reflecting the eco-friendly aspect of solar energy.
4. Earthy Brown - 
                            
                            #8B4513
                         - A grounding brown that connects to nature and adds a stable, earthy tone to the palette.
5. Bright Red - 
                            
                            #FF5733
                         - A bold red that can signify urgency or action, perfect for highlighting key information or calls to action.
6. Soft Gray - 
                            
                            #D3D3D3
                         - A light gray that adds a modern touch and provides a neutral background to enhance readability.

This updated color palette maintains the original theme of solar energy while introducing Bright Red to create emphasis on critical elements, such as alerts or key metrics. The red accent can help draw attention to important data or actions in your calculator.

What kind of data or information would you like to emphasize with the red color? Are there specific features or functionalities you envision for the calculator?