The Walls are green. Green that reminds the eye of nature, where ferns curl around eachother and leaves fan out from the same point.

The Walls are green, for as far as she knows.

The little that she gets to know from under The Blanket, that obscures the rest if her veiw.

While The Walls are green, The Blanket is never one color. Most often it is white, but sometimes it is red, others it is yellow...