yeah, batch processing is like the only practical way to modify 80+ images. Do you have any program that does that?
AFAIK, there are lots of programs that can batch process images from one format into another, but I have yet to see a program that can batch process image colors AND save the image as transparent GIF. If you can find a program that does both, let me know.
ROTFL!

I not only
have such a program, I have been
using it to make all those buttons I uploaded for you to take a look at.
I use Thumbs Plus 4.5, even though 5.0 is now out. I've been using Phillip Crews' software since it came out (it now costs $80, but used to be $10 in it's early, much less powerful versions!

). TP has extremely powerful functions, and is ideal for managing large numbers of graphics & photos.
About buttons, the only "hard" thing is deciding on the exact look. The sequence of transforms, not just the transforms themselves, is what is important. The test cases I uploaded (the de-intensified blue, serpia, half-serpia) took about 20 seconds to do 60 of the 80 buttons I have stored. I am missing about 20 buttons, and some are mis-named (would take a while to serach for their right title), which is why I want a zipped file of the 80 you used.
The disadvantage to batch processing is that by definition, individual pixel editing, making, etc. is not possible. But that's OK, as I'm no graphics artist. But if a style is done (e.g., a button set is completed, like the ones you use) they can be transformed uniformly with any funtions (e.g., the result will match perfectly, as you can see from my posts of the test cases).
The URL is:
http://www.cerious.com/ .
TP is comperable to Photoshop for technical ability and learning curve. TP and Photoshop have some overlapping functions, but they are very different programs (so I have both, but rarely boot into W2K for Photoshop, which I am not too good at anyway).