Byrne's charcoal style variation is broken

[dsas]

Quick summary

Applying the Charcoal style variation to the Byrne theme results in unreadable text.

The style variation comes from the parent theme (blockbase) and is inherited by Byrne. We audited the theme and style variation in the past and decided that:

Byrne Charcoal - could potentially work with some adjustments to the homepage.

but we didn't do anything about that.

We should either make those adjustments, or exclude the charcoal variation from being offered with Byrne by adding the following to the settings key in the theme.json:

		"custom": {
			"excludedParentStyleVariations": [
				"Ruby Wine",
				"Charcoal"
			]
		},

Steps to reproduce

1. Go to https://wordpress.com/theme/byrne
2. Click on the second style variation (charcoal)

A clear and concise description of what you expected to happen.

I expected the preview on the right to change to a charcoaly (dark?) set of colours with readable text.

What actually happened

The background of most of the page changed to be a light colour on a near black background, except for the "Featured" bit at the top of the page, which used white text on a near white background.

Impact

Some (< 50%)

Available workarounds?

Yes, easy to implement

If the above answer is "Yes...", outline the workaround.

Don't choose the obviously broken style variation

Platform (Simple and/or Atomic)

No response

Logs or notes

No response