Pubdate: Thu, 22 Jan 1998 Source: The Telegraph (UK) Contact: 'DATE RAPE' DRUG TO BE DYED A PHARMACEUTICAL company has won approval to put a dye in the drug Rohypnol, a previously colourless sleeping drug that has been used by men to spike women's drinks, leaving them helpless against sexual advances. Roche, the Swiss-based manufacturer, has developed a new version of the drug that turns an intense blue when the tablet is dissolved in liquid. The company's formulation has been granted approval in Britain by the Medicines Control Agency.