Cookies to Artie

CJ is one of my special ponies, so yay, I get to talk about her a bit here

There are three reasons. One is batch difference. Y3 CJ was issued in a LOT of countries and a LOT were made. There are wide ranges of colours between a paler salmon and a more orangeish tone. These are all normal.
Two is fading. That's more likely on a worn looking toy, the cherries look bleached out.
Three is variation. In the Uk and in Europe (and maybe South Africa?) we had other versions of CJ that didn't get sold in the US and Canada. We had the year 3 one as well, though, so all those orangey versions also exist here.
The 1986/7 versions of Cherries Jubilee in Europe and the UK have much darker symbols. THe link Artie posted shows images and you'll see how dark they are. The UK 2nd Edition CJ has straight hair - like Posey, it has never been curly. The European one has curls. The UK one was made to match the rest of her set, who all have straight hair.
I don't think anyone would bother deflocking a SS CJ since the regular one is so common. But the colour of symbol that the UK and Euripean 2nd editions have is probably around the same shade as the SS under the fur.