create a natural blue hour sky with the same overall character as this scene a deep but still luminous evening blue layered realistic clouds and a soft residual sunset glow near the horizon keep the sky darker and cooler overall but introduce more visible dusty pink muted rose and soft mauve colour within the clouds and in elongated horizontal afterglow streaks across the sky the pink should feel like the last light remaining after the sun has already set softly illuminating selected cloud edges and thin atmospheric bands rather than turning the whole sky pink keep the colours elegant low saturation and beautifully blended into the surrounding blue with some cooler blue grey cloud areas for contrast use natural irregular cloud formations with realistic depth soft edges and enough open blue sky between them the result should feel calm sophisticated and photographic with noticeably more pink afterglow than before but still clearly blue hour rather than sunset avoid orange skies neon pink strong purple dramatic glowing clouds or stylized effects