I moved my plant outdoors today and underneath it, the beige carpet is now grey. I remember the water overflowing the plant dish a few times. I killed the mold but I need to know how to get the gray color out of the beige carpet. There are products listed that promise to kill mold or to kill mold smell, but I can’t find any that remove stain.
I used baking soda and put vinegar on it which lightened the spot, but it is still not back to normal.

Will call the oxy people. There wasn’t much information on the Internet regarding mold stain removal.