The Greens are hoping to add some colour to what has so far been a lacklustre general election campaign in Germany. The party has formally launched its battle for votes in next month’s ballot, showcasing its policies on a roadshow nationwide.In government with Angela Merkel for now, the Social Democrats meanwhile have adopted a sharper tone towards her conservative party. Unrepentant after making personal attacks on the Chancellor, SPD party chief Franz Müntefering defended his robust campaigning, saying those accusing him of impertinence don’t understand how democracy works. In her bid for re-election to the top job, the CDU’s leader has chosen not to get personal. Instead, Merkel is treading on what is traditionally Social Democrat ground. She has been exuding the benefits of a minimum wage, saying everyone must be given the chance to work. Already well ahead in the opinion polls, the Chancellor’s campaign was boosted further last week with news that Germany has emerged from its deepest recession in over 60 years.