Cinematic Twilight Portrait at the Rome Colosseum

A highly detailed, structured prompt for generating a photorealistic, cinematic portrait of a female travel influencer seated on a ledge at the Rome Colosseum during the 'Blue Hour' (twilight). The prompt specifies a red crop top and mini skirt, honey-blonde balayage hair, and complex mixed lighting (warm key light on the subject, golden architectural light on the ruins, cool blue ambient fill) to create a luxurious and atmospheric scene.