I bought the spa 'blue'. Great price and nice look.  Very mild circular pattern exists in the background of these curtains and is non-intrusive to its surroundings.  Was a bit concerned that perhaps these were irregulars based on the fact that each panel (4) had sparse pulls or a run in them (look closely in photos).  Regardless, I hung them up after ironing as thankfully they are concealed by the ingrained pattern.  This color does manage to block out the light.