Dyed In The Wool Megaupload I Have A Beautiful White Wool Coat That Has A Terrible Set In Mold Stain. Can Anybody Tell Me How To Dye It?

I have a beautiful white wool coat that has a terrible set in mold stain. Can anybody tell me how to dye it? - dyed in the wool megaupload

I took my coat of white wool storage and has a terrible stigma that the form is done not start. I want to dye it black, but do not want to destroy in the process. Has anyone experience with tissue dye (wool)? Please help! I love this coat!