I put a case of beer on the back seat, the box was purple. It left a line of purple where it rested on the seat. I used the detailers domain strong cleaner which got alot of it off, but not completely.

Needless to say I feel like an idiot for doing this. It was in the trunk and I got tired of it sliding around so I moved it upfront for a few hours.

Any thoughts or suggestions?

Don't put beer box on back seat.

I don't even want to know what is in it.. all I know is it gets out just about every stain you can imagine.
How about wet red tissue paper bleeding and then drying onto a cream color leather interior ? Been there done that.

just be very very careful with it

I've always use Meguiar's products for my interior cleaning. The stuff has always worked very well for me.

-Don

http://www.spinneybeck.com/shop/productDescription.aspx?ProductID=1798

great leather conditioner and even better ink removal!