Message: I need to know tips for dyeing a thick dark green sports sweat shirt. I accidently used a bleach to remove a stain and it turn portions of the sweatshirt a lighter color, two tone. I would like to know if using a dark green powder Rit dye will help eliminate the two tone appearance.

No. As explained on my web page, "How can I fix the bleach spots on my favorite clothing?", dye is transparent, so any spot that you dye will continue to be lighter in color than the surrounding areas. You will usually do best to use a fabric marker to color in the lighter spots before dyeing.

What is the sweatshirt made of? Polyester cannot be easily dyed at home. Cotton, or fabric that is at least 50% cotton, can be dyed with all-purpose dye, but results are usually more satisfactory with a fiber reactive dye, such as Procion MX dye. Fiber reactive dye is much more colorfast, and usually brighter in color, than all-purpose dye, when used on cotton. All-purpose dye is better for use on wool and nylon, and in any case is best used at a temperature of 190 degrees Fahrenheit or higher. You cannot use all-purpose dye at tap water temperatures, unless you do not care whether or not the dye will wash out when the garment is laundered. All-purpose dye tends to bleed a little in the laundry with every washing, for the life of the garment.

For a list of different companies that sell fiber reactive dye, see "Sources for Dye Supplies".