clown ????

[cityreefer]

So this is might sound like an odd question, i wanted to introduce a clown in with my other clown i have had for a few years.
In the store it looked orange in color like the ocellaris clownfish i already have. i just added it to my tank and it looks yellow in color more like a true percula clownfish.

Question is do true percula differ in color at diffrent ages? or is it just stressed out and i am jumping the gun on thinking its the wrong species ? I really like the deep orange color of my other clown I would like to keep the same together.

Any help with this would be great! Thank you