Enhancement: set border-color as a variable instead of hex code in Code Block

[ghost]

What problem does this address?

Similar to: #36462

In WordPress 6.0.1, when you choose one of the colors from the color palette to set it as the border-color of the Code Block,

1. in the Editor, the border-color is set as a variable in the Code Block. ✔️

2. in Global Styles, the border-color is set as a hex color in the Code Block. ❌

What is your proposed solution?

Border-color coming from Global Styles to be set as a CSS variable in the Code Block.

Why?
Allows full site editing to change border-colors without needing to individually change every instance of the Code Block to update to the new border-color.

Please confirm that you have searched existing issues in the repo.

Yes

[github-actions]

Hi,
This issue has gone 180 days without any activity. This means it is time for a check-in to make sure it is still relevant. If you are still experiencing this issue with the latest versions, you can help the project by responding to confirm the problem and by providing any updated reproduction steps.
Thanks for helping out.

[github-actions]

Hi,
This issue has gone 30 days without any activity. This means it is time for a check-in to make sure it is still relevant. If you are still experiencing this issue with the latest versions, you can help the project by responding to confirm the problem and by providing any updated reproduction steps.
Thanks for helping out.

[glendaviesnz]

If you add a custom color to your palette in global styles and use this to set the border color this will be applied as a variable:

Going to close for now as reporting user has been deleted.