The BBC's Virgin Galactic: Sir Richard Branson rockets to the edge of space includes the image below.
Much of the Unity spacecraft appears (almost) transparent in this image; you can see the blue sky right through it. Why?
Unity soars into the New Mexico sky (Virgin Galactic via BBC)
Here at apogee the spacecraft now looks white:
Screen shot from embedded video in the BBC article.
The moment Sir Richard Branson's rocket plane reached its highest altitude