Saffron itself is red/orange-ish red (Wikipedia calls it "crimson", which may or may not be helpful!) by itself. I've seen/used dark red to light orangey-red, but never seen saffron itself being pure orange or yellow (though there may be different varieties with different availabilities in different countries). As someone above noted, it does TURN things yellow--rice, chicken, your cutting board, your hands...
After just over half, I was done knowing and half-guessing, so I tried to see if suffragettes might fit in somewhere. Turns out it did fill an answer, just not the one I had intended. Have never heard of the term as "the right to vote" though.
In the name of pedantry I will point out that truffles aren't mushrooms. Mushrooms are the fruiting bodies of a fungus - truffles are sclerotia which are masses of mycelium or the vegetative portion of a fungus.