so even if you take out the colour - Fullers earth can do it ... I say Can , it's not guaranteed - the marker will still be there for C&E to find.
The only thing that will take out the red dye is a product called Fulminite which is used for recycling cooking fat. It is made by LaPorte Inorganics and its sale is carefully monitored by HM Customs.
-------------------- No man will be a sailor who has contrivance enough to get himself into jail; for being in a ship is being in a jail, with the chance of being drowned.Samuel Johnson