I love the bold pattern of these panels, but they are definitely NOT room darkening which was not a deal-breaker for me.  Consider that if you want to shut out light.  The slight sheen adds to their appeal.  When I unpacked them, I hung them immediately with no ironing.  That's a plus and they add pizazz to the room.  Any small wrinkles disappeared in a day. I ordered the dark blue which is almost black.  I LOVE THEM!