Paraphrase the line taken from Bradbury's Fahrenheit 451 that is listed below. "They walked in the warm-cool night on the silvered pavement."
"They walked in the warm-cool night on the silvered pavement," Bradbury uses the paradoxical imagery of a night that is both warm and cool to again establish the mood of the scene and the characters' emotions: They are emotionally warm toward each other and they are walking on a cool evening; the mood then is inviting and their emotions encompass affection. The metaphor of "silvered pavement" means the sidewalk cement was reflecting moonlight shinning from above. This confirms and adds to the mood and their revealed emotions. You might paraphrase this as: They walked affectionately together in the cool of the night on a pavement softly lighted by the moon glowing above.