issue 99: by default use same color for contour-plot labels and contour lines
issue 99: by default use same color for contour-plot labels and contour lines

NOAA-PMEL/PyFerret,NOAA-PMEL/PyFerret,NOAA-PMEL/PyFerret,NOAA-PMEL/PyFerret,NOAA-PMEL/PyFerret