We first bought this in 2014 and the ""natural"" then was lighter, more ivory colored, which we loved.  The old one is in perfect condition despite lots of use, only from various parties, we got chocolate, wine, and turmeric stains on the seat areas (probably there was a way to remove those, but we were too busy and ignored for years).  This new one was to be the same, but I notice the ""natural"" color is darker, not as pretty dye, more flax colored I'd say.