I did an exhibit at the convention a couple of years ago of colored gaming tokens. I'll post the pictures of them here as they contain all the different kinds of color tokens I was able to find. The Chipco ceramic-over-metal are those without a discernable rim around them. You'll also see the later chipco design, as well as tokens from NCM with plastic stickers on a converntional metal token.

You may have to scroll the image right to see all this picture.

See the next post for the rest of them as the pictures were too large to post as a single upload.