hildegard knef s wistful song talking about teenage ambition, but. ..this one. punk legend nina hagen s 1974 hit in which a girlfriend scolds a boyfriend for using black and white, not colour camera film on holiday. interpreted as a criticism of the grey days in the former communist east germany where merkel grew up. the door officially closes on angela merkel s time next week when power transfers to the head of a rival party, the social democrat, olaf scholz. when a new chapter in german and possibly european politics begins amid a growing covid crisis in the country. mark lobel, bbc news. stay with us on bbc news. still to come: we meet the designers of a new safety app helping to combat