Metro began collecting and recycling post-consumer latex paint (PCLP) from the public in 1991 as part of its household
hazardous waste program. While not considered a hazardous waste, latex paint was received by regional garbage customers along with hazardous wastes such as
oil-based paints,
pesticides,
solvents, and cleaners. In an effort to handle the latex paint in a cost-effective, environmentally-responsible manner, Metro decided to recycle the reusable latex paint and return it to the public. Initially sorted into only about 5 or 6 basic colors, the latex paint was bulked into 55-gallon drums and then donated to charitable
non-profit organizations or given away to public customers at no charge. Metro encountered difficulties in both finding a market for the drums of paint and in efficiently recycling the paint. In August 1999, Metro opened their first latex paint recycling facility in
Oregon City, Oregon, USA. This combined recycling and retail center allowed for more efficient processing of the paint, and packaging into more marketable 5-gallon pails. At the same time, Metro began selling the
paint back to the public at a price intended to recoup the program's labor and material costs, which placed the product's price up to 80% less than that of comparable new paint. By this time, Metro's color palette was increased to about 10 to 12 basic colors. Metro also introduced the "Color Blending Guide", which showed customers that other colors could be created by blending together the basic MetroPaint colors. As the paint gained in popularity with
homeowners, painters, and
landlords, these customers affectionately dubbed the product "MetroPaint," a truncated version of "Metro’s recycled latex paint". Metro partnered with
Rodda Paint in January 2001 to conduct quality performance testing in an effort to quantitatively demonstrate that MetroPaint was comparable to conventional latex paint. Metro developed a pail label and brand image for MetroPaint. Considerable efforts were given to
marketing the paint, including selling the paint through a few small dealers, though the vast majority of paint sales occurred at the MetroPaint store. In April 2003, Metro improved the marketability of MetroPaint by selling it in 1-gallon cans. In February 2005, Metro relocated the recycling and sales to a new facility, located on
Swan Island in Portland, Oregon, USA. As a result of the Product Stewardship Institution's National Paint Dialog, in August 2007, MetroPaint became the first recycled latex paint to be certified under Green Seal's new GS-43 Recycled Content Latex Paint environmental standard. This third-party certification attested that MetroPaint is an environmentally-responsible product that performs as well as conventional latex paint. Metro developed a new brand image to coincide with the Green Seal certification. In July 2008, Metro began selling "specialty" colors in 1-quart cans. By February 2009, MetroPaint's color palette had expanded to about 20 basic colors, several "potpourri" colors, the specialty quart colors, and the color blending guide. In June 2009, Metro partnered with
Miller Paint as a major dealer for the Certified MetroPaint product line. ==Color sorting==