The light of a streetlamp
   Streams through the stained glass,
 And colors spread stably 
   Over surfaces below.

Then car after car
   Pass by that bar,
 And the colors are
   Climbing and crawling,
   Shifting and sprawling,
 As headlamp light, briefly,
   Dances through the window --
      Kaleidoscope swirling the
      Shockingly bright colors
      In short-lived arcs. 
 
 The window was designed 
   To evoke a cathedral, 
       And deny all debauchery...

Oh, how it's failed.