Is it something like this?
If you can find some way to upload an image, that'd help a lot.
That's a holo bleed. It happens sometimes with holo cards where the foiling effect goes into the body of the card. Diamond and Pearl era cards I've noticed have this a lot. I have seen it occur with WOTC era stuff, but I'm not too sure if it's super common with Gym era sets.Yeah! actually it's exactly like that.