Never notice before but have these yellow stains around the edge of the headliner. Not sure what it would be from. Mice ? There is no mice smell in the car and no mice droppings or any hole's in the headliner. Some sort of mold ?  Any else ever have something like this ?  Looks like when I do the interior I will be replaceing the headliner. The light green colour is hard to find. The dark stain was sticky and appears to be from a soft drink. But the rest ?? It goes all the way round the out side edge's and the back.