"When you have a minute I've been asking around and someone had an idea for a long-term solution."

"What is it, sir?"

"There's a portal, in Kanah, to the place where we met the aliens. If we could smuggle you through it, you could live there, trade with the aliens for stuff you need."

...she translates that. Reds look nervous.

"You don't have to. It's an option, but it's fine if you'd rather stay here."

"It's nice here," one says eventually.

Sigh. "Okay."

They look nervous about the sigh.

"We'll probably come up with something else eventually."

The translator says, "They don't necessarily mean they won't do it, it's just very comfortable here and the last time you moved them was terrifying."

"I understand."

Awkward waiting in case he has anything else to say.

Nope. He leaves them alone. 

They go back to being red in Isel's vacation house.

It's a nice vacation house! It has seven bedrooms, all with their own bathroom, all with a hot tub. It has a in-home theatre with lots of movies and lots of video games. It has a servant's area downstairs with a large kitchen and a small kitchen upstairs. It has a bar. It has a pool table and a ping-pong table and six sitting rooms.

They are not even especially cramped in here. It's nice. They know she's just going to burn it down when they leave but they try to keep it reasonably tidy anyway.

She checks in on them occasionally. She asks all the reds if they can recommend some people for an experiment with cleaning reds. She is sure she can protect the volunteers if the experiment is deemed not a success.

What will they be afterwards?

There is going to be a casteless colony planet (this is a secret, please don't go posting about it on the internet) and on it the colors will all mean the same things but people will be allowed to dye their hair and change if theirs doesn't suit them.

Any color at all?

Some people are gleefully anticipating that everyone on the casteless colony planet will dye their hair blue and the experiment fail miserably but they are not doing anything to prevent that, just predicting it.

They have some possibilities.

Great. 

Yellows interview medical angels to find some who'd be willing to learn Amentan biology and then do all of the following long list of procedures to a perfectly healthy person.

"Why do they want this done?" asks an angel.

"Uh, religious reasons."