Rooted in southern elegance, DECORUM is a home decor boutique specializing in custom window treatments. We proudly feature Savannah Georgia's largest selection of silk, linen, and embroidered ready-made drapery panels as well as full selections of designer and upholstery fabrics.. Window Treatment specialists - Ready-made draperies,custom draperies,curtains,blinds,shades,shutters,and windows hardware,window treatment measurement and installation services. Interior design and decorator. Designer fabrics and upholstery fabrics. Customized furniture and home decor.