Does anyone know how to remove manila envelope stains?

[Tinker Bell]

My mom bought me a t-shirt and left it in the manila envelope for two months before giving it to me. Upon removeing it I discovered that the yellow color from the envelope had bled through and stained the shirt.I've tried Advantage, De-solve-it, Shout, Spray and Wash, Greased Lightning, hydrogin peroxid, baking soda, and color safe bleach. Nothing has worked. Does anyone else have any ideas? ------

[♥TayLee♥]

Try some vinegar. ------

[♥TayLee♥]

Try some vinegar. ------