Work on item display windows and variant coloring for portraits and sprites.

data/items/item.gd

@@ -8,3 +8,7 @@ class_name Item extends Resource
 @export var max_quantity : int = 1
 @export var varies : bool
 @export var per : bool
+@export var grade : String = "F"
+
+func item_type_name() -> String:
+	return "Item"