Oh my God! I found the solution for bleached stains on carpets! Simple as this: crayons and a hair dryer.
Just find the color matching your carpet and color it moving lightly over the stain, then use the dryer to "melt" the crayon (once you found the right match).
So I'm selling a home. The tenants who moved out were wreckless w/the place & among other things that needed to be painted & repaired were two Bright Yellow Footprint Sized areas of discoloration in my wine-red carpet.
I figured the new buyers would want new flooring anyway and began to show the home. It did not seem to bother one family but during another showing I could kindof tell that that area is where I began to lose the families interest.
I was not going to let that happen again today! Even if it meant I would attempt to make a somewhat watery consistency of the acrylic paint that I usually use on canvas. This could be a mess I thought, so I googled first & came across this thread. Hmmnh, permanent marker or crayons. I have permanent marker (though the thought of that going wrong frightened me) and I also have nearly a billion crayons. So I picked out an assortment of similarly colored crayons, about seven (sticking w/the Crayola Brand, Not sure why) and tested out a small swatch.
Within moments the carpet was WONDEROUSLY less distracting and I will no longer be so paranoid about the area. (I tried vacuuming over the area, umnh, maybe not going to do that agn). But it's a good temporary fix at the very least and if it happens again I will try to address the bleaching action by spritzing a mixture of water and vinegar over the area and letting it dry (the smell will go away). Vinegar gets rid of the bleach.
Thank you so much!