From Fedora Project Wiki
What's wrong with this picture?
Did you notice that the Fedora 7 disc and the Fedora 16 sleeve are looking at little... purple? Not the Fedora blue we are used to? Further, did you notice the fonts on the Fedora 7 disc do not match the other materials here?
The reason the items on the left came out purple is because they were printed using RGB, not CMYK.