Hi @Lachlan Aquilina
It look like the dark mode is enabled.
Please go to Word > Preferences > General > Personalize and select Turn off Dark Mode.
For more, please refer to: https://support.microsoft.com/en-us/office/dark-mode-in-word-e17b79a3-762f-4280-a81c-a15a859a693a#ID0EDD=Microsoft_365_for_Mac.
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