Floral show: the hands of a Jamaican woman with vitiligo on a chintz bedspread is one of 25 shortlisted pictures in an exhibition of 500 images representing Britain at the beginning of the 21st century which opened at the Photographer's Gallery in London last week.Vitiligo causes depigmentation of the skin resulting in well-defined whitish patches.'The original intention was to ask people to consider something which is sometimes thought of as threatening, and to think of it as something beautiful, 'said photographer Alexa Wright.