@ cjd
That's one red rock! Is that real colour or some kind of enhanced false colour for geochemical/geological analysis?
It could be converted gray tones, like Ted Turner does to old B&W movies.
Doesn't matter. Science and technology are such now that a B&W photo
of yourself can be converted into realistic color by special computer software that analyze gray tones and scale.
BTW, the close flyby? 3.2 klicks? That's AWESOME close! I suspect, Chinese technicians may have recorded the carrier waves of the craft's radio transmissions and thus may be in a promising position to measure even faint Doppler shifts from the flyby to get the NEO object's mass, mean surface gravity and density.