Multi-Color Corporation announced first quarter core earnings per share increased 12% to $0.91 per diluted share from $0.81 in the prior year quarter.     Net revenues increased 7% to $217.9 million compared to $203.1 million in the prior year quarter.  Acquisitions occurring after the beginning of fiscal 2015 account for 8% of the increase or $17.3 million.  Organic revenues increased 4%.  Foreign exchange rates, primarily driven by depreciation of the Euro and the Australian dollar, led to a...