Hello,
We do not have a color in 14ct. Aida that matches the 25ct. Mushroom completely but colors like 14ct. Dirty or Sage/Summer Khaki would be the closest matches. They will be darker than the mushroom color but that's the closest I think? If you want to go lighter, then a 14ct. Lambswool or Parchment would work as well. Hope this helps?! Thank you!
~Kristi @ ECS