So simple hydrogen peroxide didn't reall work as well as I'd hoped so after looking at some videos, I used a suggested mixture of Dawn, hydrogen peroxide to get the stain wet and scrubbed a bit to get the stain fully saturated. Then I powdered the top of the stain with baking soda and pushed it around with my fingertips until it was a paste and ground into the stain. I let that sit for 15 mins, cleaned it up and did it once more and the stain is completely removed! The fibers did get a bit ruffled from all the scrubbing over the years but the stain is gone and it's not nearly as noticeable.