ContourLayer.setContourColor

void setContourColor(int contourColor, int minorContourColor = -1);

Argument	Default	Description
contourColor	(Mandatory)	The major contour line color. If this method is never called, the default contour line color is semi-transparent black (80000000).
minorContourColor	-1	The minor contour line color. -1 means the minor contour line color is the same as the major contour line color.