def drawOverlay(listOfHists, name="", opt="hist", varOpts=[""], colors=[kRed, kBlue, kGreen, kMagenta, kOrange, kBlack, kViolet, lineStyles=[1], legEntries=[], logY=False, axisMin=0, legPos="right", legTextSize=0, inputCan=None, legHeight=0.15, legWidth=0.2, supressZero=False, padFactor=1.1, lineWidths=[gStyle.GetHistLineWidth()], fillStyles=[0], preserveStyle=False, yOffset=1.05)