How does Richard Yates use imagery in The Easter Parade: A Novel?

Imagery:

"Pookie had spent a lot of money on her own dress and rich little hat, both in a new shade called Shocking Pink, and she'd spent many days regaling anyone who would listen with the same weak joke."

"Emily felt along the wall for the light switch, and when she found it the room exploded into clarity. There was blood on the tangled sheets and on the pillow; there was blood down the front of Sarah's slip and all over her swollen, wincing face, and in her hair."