contour with white lines

This is using only one colormap for the pcolor code and displays the contour with white lines.

colormap(jet(colorDepth));
 
hold on;
pcolor(x,y,data); shading flat
 
[C,hfigc] = contour(x, y, data,[0:0.1:1]);
set(hfigc, ...
    'LineWidth',1.0, ...
    'Color', [1 1 1]);
 
hcb = colorbar('location','EastOutside', ...
    'FontSize'   , FontSize    , ...
    'FontName'   , FontName    , ...
    'Ylim'       , [0 1]       , ...
    'Box'        , 'on'        , ...
    'TickDir'    , 'in'        , ...
    'TickLength' , [.02 .02]   , ...
    'LineWidth'  , 0.6);
 
hcLabel = ylabel(hcb,zLabelText);
set([hcLabel], ...
    'FontSize'   , FontSize    , ...
    'FontName'   , FontName);
 
hold off;