Experience: With over 30 years in business, Rainbow Coatings of Michigan has done a variety of metal finishing jobs. Large and small, we have done them all. With our continuous straight line painting process Rainbow is able to handle aluminum extrusions up to 40 feet long and over 6 feet high. Our custom racking system enables us to paint some of the most usual shapes and sizes of material. Dont let anyone tell you that it cant be painted until you talk to Rainbow Coatings of Michigan Customer Commitment: Color matching is our expertise. Color chips are available to match any manufactured paint or we will customize to your needs. Flats, Brights, Mica, Metallics, 2 coat, 3 coat, we can do them all.