One thing that can help is to make sure you use the same color palette on all of them. Of course if you don't have something like photoshop, this is not the easiest thing to do but...
If you are at all handy with command line tools and are using MacOS X there are a lot of free utilities that are pretty good.
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timeasmymeasure
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Date: 2004-08-25 04:16 pm (UTC)If you are at all handy with command line tools and are using MacOS X there are a lot of free utilities that are pretty good.