load('object3d.mat');
figure
pcshow(ptCloud)
xlabel('X(m)')
ylabel('Y(m)')
zlabel('Z(m)')
title('Original Point Cloud')
maxDistance = 0.01;
roi = [-inf,0.5,0.2,0.4,0.1,inf];
sampleIndices = findPointsInROI(ptCloud,roi);
[model,inlierIndices] = pcfitsphere(ptCloud,maxDistance,...
'SampleIndices',sampleIndices);
globe = select(ptCloud,inlierIndices);
hold on
plot(model)
Now if you want to change the color of figure and axis just wirte
i am setting it to white, you can chose your color
set(gcf,'Color','w')
set(gca,'Color','w')