The page: Dark Slate Gray carries the densest text, Slate Gray lowers the voice for secondary notes, and Gainsboro leaves faint rules visible without competing with the copy. White is the untouched paper and the open margin around it.
The correction: Light Coral introduces a softer note, while Red makes the final instruction impossible to overlook. Proofreading marks traditionally use a contrasting ink for exactly this reason: the change must remain separate from the material already on the page.
