I got one that looked just like that when I got him then in about 24 hours the pinkish color turned red, and the green got really darker. I wanted a pastel fish but got another colorful one. What other fish do you have in your community tank? Just a little warning keep an eye on him he can be a bully or get bullied easy. Have a back up plan even if it is a bucket temporarily.
How large is the tank? Tetras are notoriously nippy, and I have an opaline...she's mean as ever! Opalines are very territorial. I would not put your lovely new companion in that tank. He will be bullied, or worse - killed. Set up a small tank all his own!