What Color Dress to Wear with Every Graduation Gown Shade Windsor Kiera Knightley's iconic emerald gown from 'Atonement' remains one of cinema's best fashion moments. Here, see where it ranks on our roundup of the most stunning period costumes ever seen on film: Ethereal Elegance Outdoor Wedding: Light Blue, White & Pink Florals Scheele's green was the most fashionable colour for the Victorian elite. Unfortunately the dye combined copper and arsenic and resulted in skin cancer, killing hundreds of textile workers. Did someone say those