Histogram File Size

Hi everybody,

I've noticed that the histogram samples on
http://www.imagemagick.org/Usage/color/#histogram are pretty large in
filesize, and here's a page that discusses the issues as well:

http://www.digipixels.info/blog/2009/11/imagemagick-histogram-example.html

I was wondering if the developers might be inclined to adjust the default
compression settings somehow to bring the filesize down?  Or perhaps there
is a switch or parameter that could be manipulated by users?

We want to make hundreds of these, and weighing in at 500k+ seems
unusually large.

Thanks so much for your attention and consideration of this matter!

- Jeff