Only <a:srgbClr> was read, so every shape naming a theme slot — which is what a Word template's own colours are — came back unfilled and its rules black or gone: a cover page lost both its coloured blocks and its divider lines. The scheme is read from theme1.xml by slot, with the text/background aliases Word's default mapping gives them, and the lumMod/lumOff/tint/shade modifiers applied per channel. Claude-Session: https://claude.ai/code/session_01Wzs2qG6Y5qm7mKmJHfu44G