To create a brighter and more vibrant atmosphere for your café while still complementing aubergine, yellow, and gold, here’s a revised color palette:

 <Vibrant Café Vibes> 
1. Aubergine - 
                            
                            #6A0DAD
                         - A deep, rich purple that evokes a sense of luxury and sophistication.
2. Yellow - 
                            
                            #FFD700
                         - A vibrant, sunny yellow that brings warmth and positivity, reminiscent of sunshine.
3. Gold - 
                            
                            #FFD700
                         - A metallic yellow that symbolizes opulence and prestige, often associated with wealth.
4. Bright Aqua - 
                            
                            #00FFFF
                         - A lively aqua that adds a refreshing and energetic touch, brightening up the space.
5. Coral Pink - 
                            
                            #FF6F61
                         - A cheerful, warm coral that brings a playful and inviting energy to the palette.
6. Bright Lime Green - 
                            
                            #32CD32
                         - A zesty, bright green that enhances the natural aspect and adds a fun pop of color.

This palette introduces brighter shades that invigorate the space, making it feel more lively and welcoming. The bright aqua and coral pink will add vibrancy, while the lime green brings an element of freshness.

What kind of ambiance are you aiming for with these brighter colors? Would you like to incorporate any specific patterns or designs in the bar and wallpaper?