While the Z-95 has a primary and secondary color, the default colors match for primary and secondary. Thus, it looks like the detailing is only in one color. The majority of the hull cannot be painted, and appears as bare metal. The yellow colored portions of the hull, such as on the nose, are also not part of the paint job and thus can't be changed.
I have changed the secondary color to orange for these pictures, and made the red color deeper so the difference is more visible. Note that the official site does not do this, so it isn't as obvious which parts of the design are which on their site.