By Satoshi Sugiyama TOKYO (Reuters) -When 22-year-old Hinako Mori moved to Tokyo last year, she chose to work part-time at Don Quijote, a major discount retailer, for one main reason - it doesn't care what colour her hair is. Sporting ash blonde locks ​with light and dark blue streaks when interviewed, Mori likes to dye her hair different colours every six weeks. It was very different when she worked at a major ‌Japanese convenience store chain that mandated black or dark brown hair. "One time, I dared ...