Them nights we had together? God, honey, it’s gonna be sweet when we can make noise in the night the way that we used to and get the colored lights going with nobody’s sister behind the curtains to hear us!
– Tennessee Williams
A Streetcar Named Desire, Scene 8. Stanley confides to Stella that he misses their life before Blanche. The "colored lights" is a metaphor for the passionate sex life they enjoyed before Blanche came to visit and spoiled it.