How do I know if my iPod is from Apple?

Hi guys, the day before yesterday I bought an iPod nano but I suspect I may have bought a clone/fake one instead of a genuine one. One of the reasons is because the icons on the sticker that covers the screen have different colors to the other ones of the same model I've seen before in stores. 

How to know if the one I bought is a genuine one from apple?

I haven't opened it due to the fact that I've been busy today and I'll probably open it later when I get off work.

Below I'll post two pictures of my iPod taken by my cell phone.

https://communities.apple.com/es/content/attachment/b113b54a-24e8-4181-885b-66a310f09321

https://communities.apple.com/es/content/attachment/ae819c95-2c1d-4bf3-8e05-7db8d47bbe9d

As you can see in the pictures, the colors of the icons on the sticker that covers the screen of my iPod are different to the one in the picture I'll post below.

https://communities.apple.com/es/content/attachment/faee2b3c-60fd-40b7-b898-2b39ef84b8f3

The colors of the iPod's icons shown In the picture above are different to those found in mine.

How come?

I apologize for my ignorance/inexperience. It's the first time I buy an iPod, actually, this is the first time I buy a product from Apple. Also one of the reasons I ask this questions is because a friend of mine got swindled, so I wouldn't want the same to happen to me. I don't know where he bought it but his was a fake/clone one that's not from Apple.

Thanks in advance and I'm sorry if my english isn't good enough. It's my second language, since I'm Mexican and I don't know how many grammatical mistakes I've made, though.