They can be orange. Also, the bars don't turn yellow untill the clowns reach about a year old.
Check the cheeks. See if they have spines on them or not. If they do, you got yourself atleast a white stripe maroon. If not, you have something else. Maybe an occelaris or perc. If it does have spines, in some time, the bars will begin to take on a yellow tint, if the lfs guy was correct.
Im not sure if the body will turn a darker shade or if it will remain orange. Hopefully someone else will chip in and help us out with that.