Please help!! Spilled bleach on the carpet

[TexasGal]

I went to Wal-Mart earlier and when I left I put one of the bags in the back floorboard of the truck. I didn't even think about it having bleach in it. When I got home and unloaded the truck, I found the wal-mart bag with the bleach in it was leaking onto my carpet and left a bleach stain the size of a silver dollar.

I am trying to sell this truck and have a man coming to look at it on Thursday. :eek: Does anyone know how I can fix this? The carpet is charcoal, or really dark gray, but black dye or marker would be too dark.

Any suggestions are much welcome and appreciated!

[Tadbit]

I would buy some Rits dye and sponge it into the spot. Just get the color of the carpet or something close.