[SPOILER] What you think about red?

[Thaliur]

But Grey is a first name and Red is Tom Redwood's last name.

Grey is a first name?
I'm pretty sure that the person on the report was called "Derren Grey", and not "Grey Derren" (which would sound more like a description than a name).

And I still don't think the infected person walking around actually was this Derren Grey, I guess Derren's the dead one tied to a table.