Twenty Sixteen: Quotes don't inherit group color settings

[melchoyce]

If you have a quote inside of a group block, the group block's text color settings are not carried into the quote.

[sabernhardt]

Quote and Pullquote blocks do not have the text color of their container block (Group/Columns), both in the editor and on the front-end.

The Cover block does not have its own text color setting, but the darker text does not work against dark backgrounds.

[poena]

I am testing this on WordPress 6.7.1.

The cite text color is also wrong.
On the front, the block quote cite is #1a1a1a
In the editor, it is currentColor, which is #686868.

The theme is adding the style for the cite to the class .wp-block-quote__citation.
This CSS is overwritten by the WordPress editor styles. The editor adds the style to the element, not the class: .wp-block-quote cite

The purpose of this change is to ensure that the quote block and the quote block cite inherits the text color from the parent block, if:

• The parent has a text color set in the block settings, and
• The quote block does not have a text color set in the block settings.

Trac ticket: https://core.trac.wordpress.org/ticket/51236

[poena]

Testing instructions for PR 7928:

Activate Twenty Sixteen
Create a new post.

Insert a quote block, and save. Confirm that the colors are the same in the block editor and the front. The cite should have a darker color than the text.

Change the text color of the quote block, and save. Confirm that the colors are the same in the block editor and the front.

Change the text color of the paragraph inside the quote block, and save. Confirm that the colors are the same in the block editor and the front. The paragraph should have a different color than the cite.

--

Add a group block and change it's text color.
Insert a quote block inside the group, and save. Confirm that the colors are the same in the block editor and the front. The color you added to the group block should be the one that is used.

Change the text color of the quote block, and save. Confirm that the colors are the same in the block editor and the front. The color you added to the quote block should be the one that is used.

Change the text color of the paragraph inside the quote block, and save. Confirm that the colors are the same in the block editor and the front. The paragraph should have a different color than the cite.