The most truly chaste, rich, and elegant carpets are those which are
of one colour only, the pattern, if pattern it may be called, being
formed by a judicious arrangement of every variety of shade of this
colour. For instance, a Brussels carpet entirely red; the pattern
formed by shades or tints varying from the deepest crimson (almost a
black), to the palest pink (almost a white). Also one of green only,
shaded from the darkest bottle-green, in some parts of the pattern, to
the lightest pea-green in others. Or one in which there is no colour
but brown, in all its various gradations, some of the shades being
nearly black, others of a light buff.