What would a neutron star look like from nearby?
To make my question more specific: I would like to consider the case where the neutron star has cooled to room temperature, so it is no longer producing visible light of it's own. And I would like to assume that it is lit by normal sunlight, emanating from a sunlike companion star at 1 A.U. distance. (The observer would sit at a location where the blueshift of this light while approaching the neutron star would be compensated by the redshift of the reflected light climbing up again. He or she would also look through a stroboscopic shutter, opening and closing in synchrony with the neutron star's rotation, so as not to smear surface detail.) Also, I would like to focus on the appearance of the "stuff" visible on the surface, not on gravitational distortions warping the shape of the surface or the sky above.
Tentatively, I would expect this "stuff" to have a metallic look. That's because the neutrons in a neutron star are a Fermi gas, like the electrons in a metal. But silver is white, while gold is yellow, so would the "stuff" have a colour? Would there be visible motion or surface details? Upwellings, downwellings, currents, cracks, mountain ridges? Would the star have a fuzzy edge? Would the terminator (if there is a terminator) look fuzzy, as if the upper layer of neutrons formed a tenuous haze? Would this haze form a luminous ring around the nightside (if there is a nightside) just like Earth's atmosphere does when seen from space? Would the rotational or the magnetic poles look different from other regions? Would the star be roughly spherical?