Twenty Sixteen: Ensure the Quote block inherits group color settings.

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.

Follow-up to [43799], [56087].

Props poena, melchoyce, sabernhardt, mukesh27, apermo, SergeyBiryukov.
Fixes #51236.

git-svn-id: https://develop.svn.wordpress.org/trunk@61441 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-content/themes/twentysixteen/css/blocks.css

@@ -77,7 +77,7 @@ p.has-drop-cap:not(:focus)::first-letter {
 .wp-block-quote {
 	border-width: 0 0 0 4px;
 }
- 
+
 :where(.rtl) .wp-block-quote {
 	border-width: 0 4px 0 0;
 }
@@ -106,6 +106,11 @@ p.has-drop-cap:not(:focus)::first-letter {
 	color: inherit;
 }
 
+.has-text-color .wp-block-quote:not(.has-text-color),
+.has-text-color .wp-block-quote:not(.has-text-color) cite {
+	color: inherit;
+}
+
 .wp-block-quote cite:before {
 	content: "\2014\00a0";
 }

src/wp-content/themes/twentysixteen/css/editor-blocks.css

@@ -321,7 +321,8 @@ figure[class*="wp-block-"] > figcaption {
 	margin-bottom: 1.4736842105em;
 }
 
-.wp-block-quote__citation {
+.wp-block-quote__citation,
+.wp-block-quote cite {
 	color: #1a1a1a;
 	display: block;
 	font-size: 16px;
@@ -333,6 +334,11 @@ figure[class*="wp-block-"] > figcaption {
 	color: inherit;
 }
 
+.has-text-color .wp-block-quote:not(.has-text-color),
+.has-text-color .wp-block-quote:not(.has-text-color) cite {
+	color: inherit;
+}
+
 .wp-block-quote__citation:before {
 	content: "\2014\00a0";
 }
@@ -550,7 +556,7 @@ figure[class*="wp-block-"] > figcaption {
 .wp-block-pullquote[style*="font-size"] cite {
 	font-size: inherit;
 }
-	
+
 .wp-block-pullquote[style*="line-height"] blockquote,
 .wp-block-pullquote[style*="line-height"] blockquote p,
 .wp-block-pullquote[style*="line-height"] cite {