create a stunning isometric architectural scene with a futuristic and elegant city layout the main structures should be rendered in a sleek combination of light beige and soft gray tones creating a harmonious balance of classic and modern elements accentuate the pathways and open areas with lush greenery in vibrant green shades for a refreshing contrast the dome on the top right should be a translucent sky blue capturing and reflecting light statues and sculptures should have an antique white finish to highlight their artistry ensure the atmosphere embodies a serene utopian ambiance with soft shadows and a subtle gradient in the sky blending from soft orange to deep purple suggesting a beautiful twilight setting the flag should be a vibrant combination of red blue and white adding a splash of color and groupings of figures in the scene should have a classic silver sheen for a dynamic touch