EPS print loses background color

I am trying to automatically generate and export a large number of eps files, but matlab loses the background color. Due to the large number of files, exporting manually is not an option.

How can I keep the background color when exporting an EPS file?

to simplify, I tried something like this:

reset(0);                         % clean up  
colordef black                    % set colordef
h = figure('Color',[0 0 0]);      % create image, black background
x = rand(1,100);                  % define x
y = rand(1,100);                  % define y
c = rand(1,100);                  % define color coding
scatter(x,y,[],z);                % plot them
xlabel('x');                      % label x-axis
ylabel('y');                      % label y-axis
title('title');                   % title
legend('legend');                 % legend
print(h,'example.eps','-depsc2')  % print to file