Rit Dye Liquid Dye, 8 fl oz, Dark Green, 3-Pack Dark green liquid dye. Not recommended for 100% polyester, 100% acrylic or fabrics with special finishes, rubber backing. Washable only in cold water, or labeled dry clean only. Pre-dissolved liquid dye is also great as a stain for unfinished wood and wicker. Works on silk and dried floral, nylon, fiber glass, plastic and even golf balls.