They'll still be trapped in the buildings.

Why exactly can't they just walk around the city, if they wear shoe covers?

They will upset people. They don't have official reason to be going places anymore.

People should not require official reason to go places.

They need official reason to upset people!

...why exactly do they want to live with these horrible people anyway?

Not telling!

Elves aren't sure how to help with that.

The authorities catch one of them touching a purple and send the purple to Lórien and tell the Elves they'd better take the red if they don't want them executed.

Elves do not want that! They take the red. 

They could take the other ones while they're at it if they want to make themselves useful.

Not especially. 

What if they suspect that ALL of them may have been touching purples and that's why they stayed.

Elves can read minds and check?

They sorrrrrrt of suspect that but mostly want them to FUCKING LEAVE ALREADY.

Have they reconsidered bribing them.

Nope.

Then Elves don't think they do want it very badly.

Somebody tries it! The reds turn down the offer. NOW will the Elves take them.

...what did they offer.

...money.

...was it a lot of money?

It ought to have seemed like it to a red!

...Elves think they are better at bribes than these people and they never even heard of bribes or money until very recently. Maybe these people should try to get better at bribes.

Would they like to show them how it's done.