Today we have a dupe/comparison post! Check out these four bottle shots! Whoa! They are all very similar! (l-r) OPI Thanks a Windmillon, OPI Mermaid's Tears, Finger Paints Choco Mint, and Zoya Bevin.
Here is one coat each of OPI Thanks a Windmillon, OPI Mermaid's Tears, Finger Paints Choco Mint, and Zoya Bevin. As you can tell they aren't all the same. Right away you can see that Finger Paints Choco Mint (ring finger) is way more minty than the others. So it is not a dupe! The other three are pretty similar here with one coat, but look to be bit different shades. And OPI Thanks a Windmillion's formula is a bit thinner and streaked some. And Zoya Bevin was a bit sheer as well, you can see some visible nail line.
Here is two coats each of OPI Thanks a Windmillion, OPI Mermaid's Tears, Finger Paints Choco Mint, and Zoya Bevin. Now you can see their true color more. Finger Paints Choco Mint is still more minty than the others. OPI Mermaid's Tears (middle finger) is more brighter than the other two. I think that OPI Thanks a Windmillion and Zoya Bevin are the closest but Bevin is more blue.
Do you need all four? Depends on your level of polish-aholicism. I love them all will probably keep them all seeing as I really like this calming sea green, and each bottle has a memory attached (don't they all!?).