<Expanded Colors for FBA02B with Darker Blues> 
1. Sunshine Yellow - 
                            
                            #FBA02B
                         - A bright and cheerful yellow that radiates warmth and positivity, perfect for creating an inviting atmosphere.
2. Tangerine Orange - 
                            
                            #FF6F20
                         - A vibrant orange that complements Sunshine Yellow, adding energy and enthusiasm to the palette.
3. Coral Pink - 
                            
                            #FF6F61
                         - A soft yet striking pink that pairs beautifully with yellow and orange, introducing a touch of playfulness.
4. Sky Blue - 
                            
                            #87CEEB
                         - A calm and tranquil blue that contrasts well with the warmer tones, providing balance and harmony.
5. Deep Sky Blue - 
                            
                            #00BFFF
                         - A more saturated blue that enhances the palette with a vibrant and refreshing tone, perfect for evoking feelings of freedom.
6. Midnight Blue - 
                            
                            #003366
                         - A dark, rich blue that adds depth and sophistication, providing a strong contrast to the lighter colors.
7. Grass Green - 
                            
                            #4CAF50
                         - A fresh, natural green that enhances the palette with a touch of nature and vitality, ideal for lively designs.
8. Lavender Purple - 
                            
                            #E6E6FA
                         - A soft lavender that adds a soothing element, creating a gentle contrast with the brighter hues.

This revised color palette incorporates darker blue shades, adding depth and sophistication while maintaining the energetic and cheerful vibe initiated by Sunshine Yellow. The combination of bright and dark blues allows for versatile design applications, from playful to elegant.

What specific applications do you envision for this palette? Would you like to explore any particular themes or add more colors?