I am finishing up a dress that I have knit with Patons Grace Mango and I just ran out of yarn. This color is discontinued so I am screwed unless a skein is found. Please help me out here folks! Check your yarn stash and see if this color is hiding out in your possession. 
Welcome to the forum!
Those of us with stashes will search. Have you tried any or all of these knitters on Ravelry?
https://www.ravelry.com/yarns/library/patons-north-america-grace/stashes?status=&cf=%3F&photoless=0&search=mango
Even when the yarn is listed as not for sale, it’s worth a try as sometimes posters don’t change the default.