Typical cheap polyester lining that doesn’t hang straight.  Sewing is marginal at best. 
Color is as shown in pictures.  I got the black option and the background is a linen color. 
I don’t know if I can even train these to hang straight as the lining won’t crease because it’s cheap gray polyester. 
I’m almost done purchasing my curtains from Wayfair.  Always seem to be a problem.