This bright, sunny morning I have two bright, sunny yellow-greens to compares - Pure Ice Wild Thing and OPI Who The Shrek Are You?
I thought they looked pretty close in the bottle, with the OPI color looking maybe a bit more yellow.
...and in natural light, that is exactly the case! lol Wild Thing is on my pointer and ring fingers, while my middle and pinky are polished with Who The Shrek Are You?
In the photos from the lightbox, they are a tad more similar, but you can still tell just how different they are. Bottom line is they are completely different colors...they just remind me of each other because they are so bright! And on a very important note, Wild Thing did not stain my nails, but Who The Shrek Are You? did stain my nails. I hadta buff the green out of them :/

**DISCLAIMER**  I was not paid for this review by anyone. I either purchased these polishes myself or were given gifts as friends because I could not find the particular shade I wanted myself.  I am not a professional nail tech, nor do I want to be. I'm just someone who enjoys polishing my own nails :)