How to export a surface plot with RGB color to a format compatible with meshlab?

The surface would be created like the example:(xsp,yst2 and zsp are matrix with the data from points and they are same size, II3 is an image with the colors of the points)

surface(scalex*xsp,scaley*yst2,...
      scalez*zsp,...
      'CData',(double(II3)/255),...
      'CDataMapping', 'direct', ...
      'EdgeColor', 'flat', ...
      'FaceColor', 'none', ...
      'LineStyle', 'none', ...
      'Marker', '.', ...
      'MarkerSize', 1, ...
      'MarkerFaceColor', 'flat');

    hold on
    %camlight right;
    lighting phong
    title('3D Scanning Point Cloud')
    axis vis3d
    shading flat
    view([0,0,1])
    axis equal
    grid on
    xlabel('X axis(m)');
    ylabel('Y axis(m)');
    zlabel('Z axis(m)');

[DGM]

See also:

https://www.mathworks.com/matlabcentral/answers/387991-how-can-i-export-a-figure-to-mashlab-like-editable-format