Save MATLAB figure with different background color

 I want to print a MATLAB figure with a dark background and white labels. If I use the print or saveas command I lose somehow the colors. The plot symbols are dark again and the background is white. 

  points = rand(100,3);

plot3(points(:,1),points(:,2),points(:,3),'*w')
grid on
set(gca,'Color',[0.5 0.5 0.5])
saveas(gcf,'test1','pdf')
saveas(gcf,'test2','png')
print(gcf,'test3.pdf','-dpdf')

All three test files end up being wrong. If I choose "Save As" in the figure menu I am able to save the figure correctly.

Any ideas how to resolve the issue?   

NOTE:-


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Answer:  

To keep the background a 
 
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