User blog comment:Maki Kuronami/The Naming Rule of Remnant/@comment-1141856-20140101001404/@comment-10380701-20140101003814

They do via being a subtle reference to a color. To top, the team color is also the color of the leader.
 * Maids are well-known for cleaning. When something's clean, it's generally often white in color.
 * Eva is the Greek form of the Hebrew, Chavvah, which means 'life'. A common color usually associated with life is blue.