Iron Forged in Fire: Part One - S1-E1
Continuity mistake: When Tony first walks in on Howard, Howard is looking through some hologram blueprints. He is talking to someone on his earpiece that at this point appears to be solid white with no extra components as it glows slightly purple from the hologram lights. A couple shots later as Tony walks up behind him, Howard’s earpiece is now black with lights and indentations on it. (00:02:25)