Manual item application and deploying ignores an ingredient's NBT data (for the most part - display: name seems to be persistent already or baked in in MC?).

If NBT data was persistent through mentioned processes, this could allow for various gameplay additions:

• applying dye to toolboxes, armors, concrete etc.
• With third-party mods in mind: coloring chests/barrels with stored inventory information or NBT data like updates in compact_storage, storage_drawers etc.