Here https://github.com/nuxt-content/docus/blob/0eb1a36196de5ec6fbd2b42e9ff49db4c08c7911/docs/content/fr/2.concepts/4.theme.md?plain=1#L21 it should be `@theme static { ...`, otherwise we can't define custom color.
Here
docus/docs/content/fr/2.concepts/4.theme.md
Line 21 in 0eb1a36
@theme static { ..., otherwise we can't define custom color.