Describe symbolism in Double Indemnity by James M. Cain

In Chapter One, Phyllis enters the living room wearing blue house-pajamas that flatter her trim figure, even though she hasn't had a chance to put her makeup on yet (Walter comments that she has a "washed out look.") Her attire is symbolic of the way she deals with those around her, but mostly with men. It seems to suggest that she relies upon hersensuality to create an atmosphere in which she feels powerful. Not very far into their conversation they begin their cat-and-mouse game, and the reader experiences a shiver, almost in unison with Walter, as the realization strikes home that their game, if they continue to play it, will end in murder.