Mithral Armor?

Hi all, Is it possible to add mithral versions of armor to the character sheet inventory from the compendium? In the compendium I see the 'mithral' section, but with no armor choices able to be added, and I see the 'armor' section, but with no options to make any of the added armors mithral. It's a bit of a pickle because I'd like to add a mithral half plate so that I can wear it without imposing stealth disadvantage on my rolls. Thanks!

Just add the word Mithral to the item after you add it to your inventory. There is no mod to apply disadvantage to your stealth rolls automatically - the normal versions of heavy armor don't actually do this, so you don't need to change any settings.