[Unnamed 30]'s shade is one reserved for those whose lines have spent several generations growing up outside the influence of a star - or behind the heavy shielding of a spaceship.
Basically, the "Moden era" has had 6 generations; three before the goos negotiated for Short Jump Drive, and three after. Almost everyone of the darkest shade has ancestors that rode through the earlier era on much slower ships - years in transit instead of months.
So the food had to be great to keep the crew from going crazy. And nobody is going to go crazy from homesickness with [Unnamed 30] feeding them - even the mixed crews.