It's just a free photo editing program (and you can make simple gifs and do some other stuff I haven't explored), but since I don't have Photoshop it's like the best thing ever.
There's a cellophane effect in Photoscape. It makes transparent duplicates of the image appear in turquoise and red, and they're offset from the original image. Looks like colorful shadows. But at the same time I see a full spectrum in the cellophane "shadows" and it's amazing… ;D;
I am aware of cellophane being a type of paper thanks to Google Images, but I've never had any.
Long story short, I have strong photosensitive cells and see orange and blue around the edges of everything and everyone. You might notice orange and blue when you look at the sides of a recording or a blurry picture. I see that everywhere. I wear glasses, too, and the colors get thicker when I turn my head to look from the sides of the lenses. If I look straight forward, the edges are either very thin or not there. Then I see more colors on both sides, but not green. If I turn my head one way, the orange and blue will be on opposite sides from if I turned my head the other way. If two edges are close enough together, I can see a full rainbow!
Therefore the cellophane effect in this program makes it easy to duplicate what I see IRL. Just put it on the lowest setting, imagine it as orange and blue, and that's pretty much what I see! It can be hard to use this effect because of that. I'm not sure if it's my eyes or the setting making the extra colors. If I turn to the right, the rainbow gets more intense. If I turn to the left, I only see turquoise and red. Without my glasses, it's a pretty nice rainbow, so I think it's the setting, not my eyes. I can even make the image move because of my sight. It's awesome!