Index: src/wp-admin/css/common.css
===================================================================
--- src/wp-admin/css/common.css	(revision 40051)
+++ src/wp-admin/css/common.css	(working copy)
@@ -244,6 +244,7 @@
 	line-height: inherit;
 }
 
+/* Any change to the default link style must be applied to button-link too. */
 a {
 	color: #0073aa;
 	-webkit-transition-property: border, background, color;
@@ -464,7 +465,8 @@
 	word-wrap: break-word;
 }
 
-.widefat a {
+.widefat a,
+.widefat button.button-link {
 	text-decoration: none;
 }
 
@@ -1242,20 +1244,10 @@
 }
 
 .wp-filter .button-link.edit-filters {
-	color: #0073aa;
-	text-decoration: underline;
 	padding: 0 5px;
 	line-height: 28px;
 }
 
-.wp-filter .button-link.edit-filters:hover {
-	color: #00a0d2;
-}
-
-.wp-filter .button-link.edit-filters:focus {
-	color: #124964;
-}
-
 .filtered-by {
 	display: none;
 	margin: 0;
@@ -1607,8 +1599,7 @@
 	color: #66c6e4;
 }
 
-.button.updated-message,
-.notice .button-link {
+.button.updated-message {
 	-webkit-transition-property: border, background, color;
 	transition-property: border, background, color;
 	-webkit-transition-duration: .05s;
@@ -1617,15 +1608,6 @@
 	transition-timing-function: ease-in-out;
 }
 
-.notice .button-link {
-	color: #0073aa;
-}
-
-.notice .button-link:hover,
-.notice .button-link:active {
-	color: #00a0d2;
-}
-
 @media aural {
 	.wrap .notice p:before,
 	.button.installing:before,
@@ -3278,6 +3260,7 @@
 }
 
 .handlediv,
+.postbox .handlediv.button-link,
 .item-edit,
 .sidebar-name-arrow,
 .accordion-section-title:after {
@@ -3292,6 +3275,8 @@
 .widget-action:focus,
 .handlediv:hover,
 .handlediv:focus,
+.postbox .handlediv.button-link:hover,
+.postbox .handlediv.button-link:focus,
 .item-edit:hover,
 .item-edit:focus,
 .sidebar-name:hover .sidebar-name-arrow,
Index: src/wp-admin/css/customize-controls.css
===================================================================
--- src/wp-admin/css/customize-controls.css	(revision 40051)
+++ src/wp-admin/css/customize-controls.css	(working copy)
@@ -762,21 +762,10 @@
 
 .customize-control-dropdown-pages .add-new-toggle {
 	margin-left: 1px;
-	color: #0073aa;
 	font-weight: 600;
 	line-height: 28px;
-	text-decoration: underline;
 }
 
-.customize-control-dropdown-pages .add-new-toggle:hover,
-.customize-control-dropdown-pages .add-new-toggle:active {
-	color: #00a0d2;
-}
-
-.customize-control-dropdown-pages .add-new-toggle:focus {
-	color: #124964;
-}
-
 #customize-preview iframe {
 	width: 100%;
 	height: 100%;
Index: src/wp-admin/css/customize-nav-menus.css
===================================================================
--- src/wp-admin/css/customize-nav-menus.css	(revision 40051)
+++ src/wp-admin/css/customize-nav-menus.css	(working copy)
@@ -25,19 +25,8 @@
 	margin-left: 6px;
 	vertical-align: middle;
 	line-height: 28px;
-	color: #0073aa;
-	text-decoration: underline;
 }
 
-.customize-control-nav_menu_location .edit-menu:hover,
-.customize-control-nav_menu_location .edit-menu:active {
-	color: #00a0d2;
-}
-
-.customize-control-nav_menu_location .edit-menu:focus {
-	color: #124964;
-}
-
 .wp-customizer .menu-item-bar .menu-item-handle,
 .wp-customizer .menu-item-settings,
 .wp-customizer .menu-item-settings .description-thin {
@@ -806,17 +795,6 @@
 	margin-bottom: 1em;
 }
 
-.menu-delete {
-	color: #a00;
-	cursor: pointer;
-	text-decoration: underline;
-}
-
-.menu-delete:hover,
-.menu-delete:focus {
-	color: #f00;
-}
-
 .menu-item-handle {
 	margin-top: -1px;
 }
Index: src/wp-admin/css/dashboard.css
===================================================================
--- src/wp-admin/css/dashboard.css	(revision 40051)
+++ src/wp-admin/css/dashboard.css	(working copy)
@@ -771,7 +771,8 @@
 	min-width: 0;
 }
 
-#dashboard-widgets a {
+#dashboard-widgets a,
+#dashboard-widgets .button-link {
 	text-decoration: none;
 }
 
Index: src/wp-admin/css/edit.css
===================================================================
--- src/wp-admin/css/edit.css	(revision 40051)
+++ src/wp-admin/css/edit.css	(working copy)
@@ -100,8 +100,6 @@
 	margin-right: 10px;
 	padding: 0;
 	font-size: 11px;
-	text-decoration: underline;
-	color: #0073aa;
 }
 
 #comment-link-box {
@@ -1035,25 +1033,6 @@
 	width: 260px;
 }
 
-.tagcloud-link.button-link {
-	color: #0073aa;
-	text-decoration: underline;
-}
-
-.tagcloud-link.button-link:hover {
-	color: #00a0d2;
-}
-
-.tagcloud-link.button-link:focus {
-	color: #124964;
-	-webkit-box-shadow:
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
-	box-shadow:
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
-}
-
 #post-body-content .tagsdiv .the-tags {
 	margin: 0 5px;
 }
Index: src/wp-admin/css/media.css
===================================================================
--- src/wp-admin/css/media.css	(revision 40051)
+++ src/wp-admin/css/media.css	(working copy)
@@ -1066,9 +1066,9 @@
 	line-height: 1.4;
 }
 
-.imgedit-group-top h3 a, /* Back-compat for pre-4.4 */
-.imgedit-group-top h2 a {
+#poststuff .imgedit-group-top .button-link {
 	text-decoration: none;
+	color: #23282d;
 }
 
 .imgedit-applyto .imgedit-label {
Index: src/wp-admin/css/nav-menus.css
===================================================================
--- src/wp-admin/css/nav-menus.css	(revision 40051)
+++ src/wp-admin/css/nav-menus.css	(working copy)
@@ -664,26 +664,9 @@
 .menu-item-settings .field-move .button-link {
 	display: none;
 	margin: 0 2px;
-	color: #0073aa;
 	font-style: italic;
-	text-decoration: underline;
 }
 
-.menu-item-settings .field-move .button-link:hover,
-.menu-item-settings .field-move .button-link:active {
-	color: #00a0d2;
-}
-
-.menu-item-settings .field-move .button-link:focus {
-	color: #124964;
-	-webkit-box-shadow:
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
-	box-shadow:
-		0 0 0 1px #5b9dd9,
-		0 0 2px 1px rgba(30, 140, 190, .8);
-}
-
 .menu-item-edit-active .menu-item-settings {
 	display: block;
 }
Index: src/wp-admin/css/press-this.css
===================================================================
--- src/wp-admin/css/press-this.css	(revision 40051)
+++ src/wp-admin/css/press-this.css	(working copy)
@@ -393,10 +393,22 @@
 	padding: 5px 15px;
 	margin: 0;
 	width: 100%;
+	border: 0;
 	text-align: left;
 	line-height: 2;
+	background: none;
+	color: inherit;
+	text-decoration: none;
+	outline: none;
+	-webkit-transition: none;
+	transition: none;
 }
 
+.split-button-body .split-button-option:hover,
+.split-button-body .split-button-option:active {
+	color: inherit;
+}
+
 .is-open .split-button-body {
 	display: block;
 }
@@ -860,8 +872,14 @@
 	padding: 0;
 	text-decoration: none;
 	outline: 0;
+	color: inherit;
 }
 
+.press-this .tagcloud-link:hover,
+.press-this .tagcloud-link:active {
+	color: inherit;
+}
+
 .tagcloud-link:focus {
 	text-decoration: underline;
 }
@@ -930,10 +948,12 @@
 	line-height: 20px;
 	padding: 12px 10px 8px;
 	color: #0073aa;
+	text-decoration: none;
+	-webkit-transition: none;
+	transition: none;
 }
 
 .press-this .add-cat-toggle:focus {
-	text-decoration: none;
 	color: #00a0d2;
 }
 
@@ -1202,6 +1222,9 @@
 	margin-top: -13px;
 	padding: 0 10px 1px;
 	font-size: 13px;
+	text-decoration: none;
+	-webkit-transition: none;
+	transition: none;
 }
 
 @media (max-width: 320px) {
@@ -1764,7 +1787,6 @@
 	margin: 0;
 	padding: 0;
 	border: 0;
-	border-right: 1px solid #e5e5e5;
 	-webkit-border-radius: 0;
 	border-radius: 0;
 	background: none;
@@ -1776,9 +1798,6 @@
 .insert-media:hover,
 .insert-media:focus,
 .insert-media:active {
-	margin: 0;
-	background: none;
-	border-color: #e5e5e5;
 	color: #23282d;
 }
 
@@ -1786,7 +1805,12 @@
 .insert-media:active {
 	outline: 0;
 	color: #00a0d2;
-	text-decoration: none;
+	-webkit-box-shadow:
+		0 0 0 1px #5b9dd9,
+		0 0 2px 1px rgba(30, 140, 190, .8);
+	box-shadow:
+		0 0 0 1px #5b9dd9,
+		0 0 2px 1px rgba(30, 140, 190, .8);
 }
 
 .insert-media .dashicons {
@@ -2012,10 +2036,13 @@
 .post-options .post-option {
 	display: block;
 	width: 100%;
+	margin: 0;
 	padding: 13px 37px 13px 14px;
+	border: 0;
 	border-bottom: 1px solid #e5e5e5;
 	text-decoration: none;
 	text-align: left;
+	background: none;
 	color: #9ea7af;
 	text-overflow: ellipsis;
 	white-space: nowrap;
@@ -2091,7 +2118,9 @@
 	display: block;
 	width: 100%;
 	padding: 13px 14px;
+	border: 0;
 	border-bottom: 1px solid #e5e5e5;
+	background: none;
 	color: #00a0d2;
 	text-decoration: none;
 	text-align: left;
Index: src/wp-admin/includes/class-wp-press-this.php
===================================================================
--- src/wp-admin/includes/class-wp-press-this.php	(revision 40051)
+++ src/wp-admin/includes/class-wp-press-this.php	(working copy)
@@ -1445,7 +1445,7 @@
 			<div class="post-options">
 
 				<?php if ( $supports_formats ) : ?>
-					<button type="button" class="button-link post-option">
+					<button type="button" class="post-option">
 						<span class="dashicons dashicons-admin-post"></span>
 						<span class="post-option-title"><?php _ex( 'Format', 'post format' ); ?></span>
 						<span class="post-option-contents" id="post-option-post-format"><?php echo esc_html( get_post_format_string( $post_format ) ); ?></span>
@@ -1454,7 +1454,7 @@
 				<?php endif; ?>
 
 				<?php if ( $show_categories ) : ?>
-					<button type="button" class="button-link post-option">
+					<button type="button" class="post-option">
 						<span class="dashicons dashicons-category"></span>
 						<span class="post-option-title"><?php _e( 'Categories' ); ?></span>
 						<span class="dashicons post-option-forward"></span>
@@ -1462,7 +1462,7 @@
 				<?php endif; ?>
 
 				<?php if ( $show_tags ) : ?>
-					<button type="button" class="button-link post-option">
+					<button type="button" class="post-option">
 						<span class="dashicons dashicons-tag"></span>
 						<span class="post-option-title"><?php _e( 'Tags' ); ?></span>
 						<span class="dashicons post-option-forward"></span>
@@ -1472,7 +1472,7 @@
 
 			<?php if ( $supports_formats ) : ?>
 				<div class="setting-modal is-off-screen is-hidden">
-					<button type="button" class="button-link modal-close">
+					<button type="button" class="modal-close">
 						<span class="dashicons post-option-back"></span>
 						<span class="setting-title" aria-hidden="true"><?php _ex( 'Format', 'post format' ); ?></span>
 						<span class="screen-reader-text"><?php _e( 'Back to post options' ) ?></span>
@@ -1483,7 +1483,7 @@
 
 			<?php if ( $show_categories ) : ?>
 				<div class="setting-modal is-off-screen is-hidden">
-					<button type="button" class="button-link modal-close">
+					<button type="button" class="modal-close">
 						<span class="dashicons post-option-back"></span>
 						<span class="setting-title" aria-hidden="true"><?php _e( 'Categories' ); ?></span>
 						<span class="screen-reader-text"><?php _e( 'Back to post options' ) ?></span>
@@ -1494,7 +1494,7 @@
 
 			<?php if ( $show_tags ) : ?>
 				<div class="setting-modal tags is-off-screen is-hidden">
-					<button type="button" class="button-link modal-close">
+					<button type="button" class="modal-close">
 						<span class="dashicons post-option-back"></span>
 						<span class="setting-title" aria-hidden="true"><?php _e( 'Tags' ); ?></span>
 						<span class="screen-reader-text"><?php _e( 'Back to post options' ) ?></span>
@@ -1507,7 +1507,7 @@
 
 	<div class="press-this-actions">
 		<div class="pressthis-media-buttons">
-			<button type="button" class="insert-media button-link" data-editor="pressthis">
+			<button type="button" class="insert-media" data-editor="pressthis">
 				<span class="dashicons dashicons-admin-media"></span>
 				<span class="screen-reader-text"><?php _e( 'Add Media' ); ?></span>
 			</button>
Index: src/wp-includes/css/buttons.css
===================================================================
--- src/wp-includes/css/buttons.css	(revision 40051)
+++ src/wp-includes/css/buttons.css	(working copy)
@@ -149,8 +149,7 @@
 
 .wp-core-ui .button.focus,
 .wp-core-ui .button:focus,
-.wp-core-ui .button-secondary:focus,
-.wp-core-ui .button-link:focus {
+.wp-core-ui .button-secondary:focus {
 	border-color: #5b9dd9;
 	-webkit-box-shadow: 0 0 3px rgba( 0, 115, 170, .8 );
 	box-shadow: 0 0 3px rgba( 0, 115, 170, .8 );
@@ -210,9 +209,42 @@
 	background: none;
 	outline: none;
 	cursor: pointer;
+	/* Mimics the default link style in common.css */
+	color: #0073aa;
+	text-decoration: underline;
+	-webkit-transition-property: border, background, color;
+	transition-property: border, background, color;
+	-webkit-transition-duration: .05s;
+	transition-duration: .05s;
+	-webkit-transition-timing-function: ease-in-out;
+	transition-timing-function: ease-in-out;
 }
 
+.wp-core-ui .button-link:hover,
+.wp-core-ui .button-link:active {
+	color: #00a0d2;
+}
+
 .wp-core-ui .button-link:focus {
+	color: #124964;
+	-webkit-box-shadow:
+		0 0 0 1px #5b9dd9,
+		0 0 2px 1px rgba(30, 140, 190, .8);
+	box-shadow:
+		0 0 0 1px #5b9dd9,
+		0 0 2px 1px rgba(30, 140, 190, .8);
+}
+
+.wp-core-ui .button-link-delete {
+	color: #a00;
+}
+
+.wp-core-ui .button-link-delete:hover,
+.wp-core-ui .button-link-delete:focus {
+	color: #f00;
+}
+
+.ie8 .wp-core-ui .button-link:focus {
 	outline: #5b9dd9 solid 1px;
 }
 
Index: src/wp-includes/css/media-views.css
===================================================================
--- src/wp-includes/css/media-views.css	(revision 40051)
+++ src/wp-includes/css/media-views.css	(working copy)
@@ -189,6 +189,10 @@
 	transition: color .1s ease-in-out, background .1s ease-in-out;
 }
 
+.media-modal-close.button-link {
+	text-decoration: none;
+}
+
 .media-modal-close:active {
 	-webkit-box-shadow: none;
 	box-shadow: none;
@@ -995,6 +999,8 @@
 	border-radius: 3px;
 	-webkit-box-shadow: 0 0 0 1px rgba( 0, 0, 0, 0.3 );
 	box-shadow: 0 0 0 1px rgba( 0, 0, 0, 0.3 );
+	-webkit-transition: none;
+	transition: none;
 }
 
 .wp-core-ui .attachment-close:hover,
@@ -1007,6 +1013,7 @@
 	height: 24px;
 	width: 24px;
 	padding: 0;
+	border: 0;
 	position: absolute;
 	z-index: 10;
 	top: 0;
@@ -1013,6 +1020,7 @@
 	right: 0;
 	outline: none;
 	background: #eee;
+	cursor: pointer;
 	-webkit-box-shadow: 0 0 0 1px #fff, 0 0 0 2px rgba( 0, 0, 0, 0.15 );
 	box-shadow: 0 0 0 1px #fff, 0 0 0 2px rgba( 0, 0, 0, 0.15 );
 }
@@ -1250,6 +1258,8 @@
 	position: absolute;
 	top: 0;
 	right: 0;
+	-webkit-transition: none;
+	transition: none;
 }
 
 .upload-errors .upload-error {
@@ -1442,6 +1452,7 @@
 	line-height: 16px;
 	border-right: 1px solid #ddd;
 	color: #0073aa;
+	text-decoration: none;
 }
 
 .media-selection .button-link:hover,
@@ -1978,8 +1989,14 @@
 	padding: 0;
 	color: #666;
 	text-transform: uppercase;
+	text-decoration: none;
 }
 
+.image-details .advanced-toggle:hover,
+.image-details .advanced-toggle:active {
+	color: #666;
+}
+
 .image-details .advanced-toggle:after {
 	font: normal 20px/1 dashicons;
 	speak: none;
Index: src/wp-includes/css/wp-auth-check.css
===================================================================
--- src/wp-includes/css/wp-auth-check.css	(revision 40051)
+++ src/wp-includes/css/wp-auth-check.css	(working copy)
@@ -92,6 +92,7 @@
 	height: 22px;
 	width: 22px;
 	color: #72777c;
+	text-decoration: none;
 }
 
 #wp-auth-check-wrap .wp-auth-check-close:before {
Index: src/wp-includes/customize/class-wp-customize-nav-menu-control.php
===================================================================
--- src/wp-includes/customize/class-wp-customize-nav-menu-control.php	(revision 40051)
+++ src/wp-includes/customize/class-wp-customize-nav-menu-control.php	(working copy)
@@ -57,7 +57,7 @@
 		</button>
 		<p class="screen-reader-text" id="reorder-items-desc-{{ data.menu_id }}"><?php _e( 'When in reorder mode, additional controls to reorder menu items will be available in the items list above.' ); ?></p>
 		<span class="menu-delete-item">
-			<button type="button" class="button-link menu-delete">
+			<button type="button" class="button-link button-link-delete">
 				<?php _e( 'Delete Menu' ); ?>
 			</button>
 		</span>
Index: src/wp-includes/customize/class-wp-customize-nav-menu-item-control.php
===================================================================
--- src/wp-includes/customize/class-wp-customize-nav-menu-item-control.php	(revision 40051)
+++ src/wp-includes/customize/class-wp-customize-nav-menu-item-control.php	(working copy)
@@ -141,7 +141,7 @@
 				</p>
 				<# } #>
 
-				<button type="button" class="button-link item-delete submitdelete deletion"><?php _e( 'Remove' ); ?></button>
+				<button type="button" class="button-link button-link-delete item-delete submitdelete deletion"><?php _e( 'Remove' ); ?></button>
 				<span class="spinner"></span>
 			</div>
 			<input type="hidden" name="menu-item-db-id[{{ data.menu_item_id }}]" class="menu-item-data-db-id" value="{{ data.menu_item_id }}" />
Index: src/wp-includes/js/mediaelement/wp-mediaelement.css
===================================================================
--- src/wp-includes/js/mediaelement/wp-mediaelement.css	(revision 40051)
+++ src/wp-includes/js/mediaelement/wp-mediaelement.css	(working copy)
@@ -110,6 +110,7 @@
 	color: #a00;
 	font-size: 10px;
 	text-transform: uppercase;
+	text-decoration: none;
 }
 
 .media-embed-details .setting .remove-setting {
Index: src/wp-includes/media-template.php
===================================================================
--- src/wp-includes/media-template.php	(revision 40051)
+++ src/wp-includes/media-template.php	(working copy)
@@ -472,7 +472,7 @@
 			<# } #>
 		</div>
 		<# if ( data.buttons.check ) { #>
-			<button type="button" class="button-link check" tabindex="-1"><span class="media-modal-icon"></span><span class="screen-reader-text"><?php _e( 'Deselect' ); ?></span></button>
+			<button type="button" class="check" tabindex="-1"><span class="media-modal-icon"></span><span class="screen-reader-text"><?php _e( 'Deselect' ); ?></span></button>
 		<# } #>
 		<#
 		var maybeReadOnly = data.can.save || data.allowLocalEdits ? '' : 'readonly';