Colour mismatch for `foreground-primary` and `foreground-accent-default` in dark mode

[lloydaf]

• @freenow/wave version: 2.27.1

Relevant code

The colours for foreground-primary and foreground-accent-default overlap in dark mode. As a consequence, users are unable to differentiate links from foreground text.

What was expected to happen?

Foreground and Accent texts should be differentiable in both light and dark modes. The decision from design is to change both foreground-primary and foreground-accent-default colours.

foreground-primary / dark mode / is FCFCFC (ref/pallete/neutral-99)
foreground-accent-default / dark mode / is F4CED4 (ref/pallete/red-90)