Removing data1 from 3D Plot and change the color of colorbar

I have x, y, z which I wanted to create a fitting surface plot by using interpolation as below. Now, I want to remove the data1 from the plot which I think it is the original data. So, the plot looks cleaner. In addition, I would like to show the variation of the colors from 0 to max, while any negative number by a smaller range. If the small range does not work, I want all the negative z to be one color. I also attached the plot and the data. Anyway to help please.

xx = data(:,1);
yy = data(:,2);
zz = data(:,3)

f = fit([xx, yy],zz,'cubicinterp');

figure
plot( f, [xx, yy], zz )

xlabel('\gamma')
ylabel('p_{s}')
zlabel('m^{*}_{NPV} ($B)')
yticks([0 , 2, 4, 6, 8, 10])

colormap jet
colorbar

[darova]

What about just plot?

plot( f )

[Yaser Khojah]

I fixed by different method but thanks for this one too.