You're just not seeing them because the big, bold, bright fabrics demand all your attention. Some prime earthy examples: Serenity by Daiwabo and EE Schenck, Toasted by Andover Fabrics, Earthtones by Norman Wyatt Jr for P&B Textiles, Forest Floor from Skipping Stones Studio for Clothworks, and many, many more before you even consider all the earthtone batiks out there.
Quilt shop owners buy wnat they like, sometimes without even knowing it. Blue is the most popular color in this country, year after year, so there's no reason for it to be "hard" for a shop owner to find if she sets her mind to it.
