Ungraying kids' clothes

I took the gray kids' clothes, and experimented with changing their color using chlorine bleach.

Procedure:  Dilute bleach in a quantity of water, enough for the clothes to move freely. Add clothing, and stir with a stick; watch for color changes in the water and in the clothes. Try for even exposures of the fabrics to the bleach, and for minimization of bleaching time. Remove clothes carefully (not splashing yourself), drain water, and rinse clothes in fresh water at least once.

Chlorine is rough on fibers, and will weaken them (or eat right through them, if you use enough, for long enough), so it must be used with care.

Results:  The bleach had very little effect on the clothes that were cotton/polyester blends...probably because the white fibers were cotton (already bleached) while the gray fibers were polyester (not dyed; made of actual gray polyester).  There were changes in the colors of the 97% and 100% cotton items:  either toward an orange or toward a purple--depending on the dye used to make the gray, I suppose.  The orangey ones needed heavy bleaching to get to an orange color.