Perhaps the reds who've seen Endorë should be permitted to come by to reassure their fellows that the Elves aren't just taking them off to die, so as to discourage them from rioting or trying to flee. Everything will go so much more smoothly if the reds know to expect they'll be safe afterwards.

That works for everybody. They do that.

Melkor comes by Avalor's office. He does not, immediately, visit a moon. 

Her assistant gives him the report and apologizes for her absence, some kind of family thing.

"No trouble," he says, and disappears again. 

In a country halfway around the world, a yellow accidentally touches a red and comes away with a red rash where he was touched, which does not fade. 

He washes - and washes and washes - and tries sitting in the sun all day -

Nope.

He reports the red to Public Health, which quarantines her for observation and him too separately.

The red seems normal. The rash spreads. 

They try cutting it out and some surrounding healthy flesh; they've got pretty good grafts these days.

That fixes it!

Same thing happens in a different country well north of there.

That one kills the red.

...the rash mysteriously clears right up.

It was probably some temporary reaction.

Yep.

Case in Tapa. 

The green calls the cops. The cops want ID.

The red tries to flee the scene.

They chase him and hit him with sticks until he stops doing that.

He doesn't have ID. There's something weird about the air pressure.

They haul him to the red jail and get his picture to see if the system knows who he is.

It does, he does burials in this district over here.

The red prison staff notifies his family.

...he answers the phone.

.........They'd like him to come by the prison earliest convenience.

A terrified red comes by the prison at once.