Darths & Droids IV: Not in Numerical Order

[VoxRationis]

In fact not.

Well that depends on their distance to the nearest star, and whether they accumulate more heat from solar radiation than from the operation of their internal systems. Assuming illumination from the local star isn't a problem, then a black object will radiate heat faster than a white one.
https://www.thenakedscientists.com/a...-black-surface

It's worth noting that the vast majority of space scenes in the Star Wars universe take place in what appears to be the habitable zone of the local star. The long-distance chases in ESB and TLJ are very much the exception. This is actually a good piece of consistent world-building for something that doesn't seem to be intentional. In a setting where FTL travel is comparatively easy, there's usually little reason for the ships to waste time shuttling through the cold, dark reaches of space.