diff --git a/src/wp-admin/css/customize-controls.css b/src/wp-admin/css/customize-controls.css
index f9ca1d7..e0c9974 100644
--- a/src/wp-admin/css/customize-controls.css
+++ b/src/wp-admin/css/customize-controls.css
@@ -465,18 +465,29 @@ body {
 	margin-bottom: 18px;
 }
 
+#customize-control-header_image .uploaded button,
+#customize-control-header_image .default button {
+	width: 100%;
+	padding: 0;
+	margin: 0;
+	background: none;
+	border: none;
+	color: inherit;
+	cursor: pointer;
+}
+
 /* Header control: current image container */
 
 #customize-control-header_image .current .container {
 	overflow: hidden;
 	-webkit-border-radius: 2px;
+	border: 1px solid #eee;
 	border-radius: 2px;
 }
 
 #customize-control-header_image .placeholder {
 	width: 100%;
 	position: relative;
-	background: #262626;
 	text-align: center;
 	cursor: default;
 }
@@ -485,16 +496,37 @@ body {
 	display: none;
 	position: absolute;
 	width: 100%;
-	height: 18px;
-	margin-top: -9px;
-	top: 50%;
-	color: #eee;
+	color: #555;
+	white-space: nowrap;
+	text-overflow: ellipsis;
+	overflow: hidden;
+}
+
+#customize-control-header_image .inner,
+#customize-control-header_image .inner .dashicons {
+	line-height: 20px;
+	top: 10px;
+}
+#customize-control-header_image .list .inner,
+#customize-control-header_image .list .inner .dashicons {
+	top: 8px;
+}
+#customize-control-header_image .selected .inner,
+#customize-control-header_image .selected .inner .dashicons {
+	top: 6px;
 }
 
 /* Header control: overlay "close" button */
 
 #customize-control-header_image .header-view {
 	position: relative;
+	width: 100%;
+}
+
+#customize-control-header_image .header-view.selected img,
+#customize-control-header_image .header-view.button.selected {
+	border: 4px solid #2ea2cc;
+	box-sizing: border-box;
 }
 
 #customize-control-header_image .uploaded .header-view .close {
@@ -575,21 +607,10 @@ body {
 	margin-bottom: 9px;
 }
 
-#customize-control-header_image .choice.random:before {
-	position: absolute;
-	content: attr(data-label);
-	left: 0;
-	top: 0;
-}
-
 #customize-control-header_image .uploaded div:last-child > .choice {
 	margin-bottom: 0;
 }
 
-#customize-control-header_image .choices hr {
-	visibility: hidden;
-}
-
 #customize-control-header_image img {
 	width: 100%;
 	-webkit-border-radius: 2px;
diff --git a/src/wp-admin/custom-header.php b/src/wp-admin/custom-header.php
index 4a2d44c..2a6a2f3 100644
--- a/src/wp-admin/custom-header.php
+++ b/src/wp-admin/custom-header.php
@@ -1272,9 +1272,12 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	public function get_uploaded_header_images() {
 		$header_images = get_uploaded_header_images();
 		$timestamp_key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+		$alt_text_key = '_wp_attachment_image_alt';
 
 		foreach ( $header_images as &$header_image ) {
-			$header_image['timestamp'] = get_post_meta( $header_image['attachment_id'], $timestamp_key, true );
+			$header_meta = get_post_meta( $header_image['attachment_id'] );
+			$header_image['timestamp'] = isset( $header_meta[ $timestamp_key ] ) ? $header_meta[ $timestamp_key ] : '';
+			$header_image['alt_text'] = isset( $header_meta[ $alt_text_key ] ) ? $header_meta[ $alt_text_key ] : '';
 		}
 
 		return $header_images;
diff --git a/src/wp-includes/class-wp-customize-control.php b/src/wp-includes/class-wp-customize-control.php
index e55a759..0b732c6 100644
--- a/src/wp-includes/class-wp-customize-control.php
+++ b/src/wp-includes/class-wp-customize-control.php
@@ -774,27 +774,28 @@ final class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control
 
 			<div class="placeholder random">
 				<div class="inner">
-					<span><span class="dashicons dashicons-randomize dice"></span>
+					<button type="button"><span class="dashicons dashicons-randomize dice"></span>
 					<# if ( data.type === 'uploaded' ) { #>
 						<?php _e( 'Randomize uploaded headers' ); ?>
 					<# } else if ( data.type === 'default' ) { #>
 						<?php _e( 'Randomize suggested headers' ); ?>
 					<# } #>
-					</span>
+					</button>
 				</div>
 			</div>
 
 			<# } else { #>
 
 			<# if (data.type === 'uploaded') { #>
-			<div class="dashicons dashicons-no close"></div>
+				<div class="dashicons dashicons-no close"></div>
 			<# } #>
 
-			<a href="#" class="choice thumbnail #>"
+			<button type="button" class="choice thumbnail"
 				data-customize-image-value="{{{data.header.url}}}"
 				data-customize-header-image-data="{{JSON.stringify(data.header)}}">
-				<img src="{{{data.header.thumbnail_url}}}">
-			</a>
+				<span class="screen-reader-text"><?php _e( 'Set image' ); ?></span>
+				<img src="{{{data.header.thumbnail_url}}}" alt="{{{data.header.alt_text || data.header.description}}}">
+			</button>
 
 			<# } #>
 		</script>
@@ -875,9 +876,9 @@ final class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control
 			</div>
 			<div class="actions">
 				<?php /* translators: Hide as in hide header image via the Customizer */ ?>
-				<a href="#" <?php echo $visibility ?> class="button remove"><?php _ex( 'Hide', 'custom header' ); ?></a>
+				<button type="button"<?php echo $visibility ?> class="button remove"><?php _ex( 'Hide image', 'custom header' ); ?></button>
 				<?php /* translators: New as in add new header image via the Customizer */ ?>
-				<a href="#" class="button new"><?php _ex( 'Add new', 'header image' ); ?></a>
+				<button type="button" class="button new"><?php _ex( 'Add new image', 'header image' ); ?></button>
 				<div style="clear:both"></div>
 			</div>
 			<div class="choices">
diff --git a/src/wp-includes/js/customize-models.js b/src/wp-includes/js/customize-models.js
index f97750b..cc7ebd6 100644
--- a/src/wp-includes/js/customize-models.js
+++ b/src/wp-includes/js/customize-models.js
@@ -26,7 +26,7 @@
 					thumbnail_url: ''
 				},
 				choice: '',
-				hidden: false,
+				selected: false,
 				random: false
 			};
 		},
@@ -160,10 +160,14 @@
 					elt.defaultName = index;
 				}
 
+				if (typeof elt.timestamp === 'undefined') {
+					elt.timestamp = 0;
+				}
+
 				this.add({
 					header: elt,
 					choice: elt.url.split('/').pop(),
-					hidden: current === elt.url.replace(/^https?:\/\//, '')
+					selected: current === elt.url.replace(/^https?:\/\//, '')
 				}, { silent: true });
 			}, this);
 
@@ -191,7 +195,7 @@
 				},
 				choice: randomChoice,
 				random: true,
-				hidden: isRandomSameType
+				selected: isRandomSameType
 			});
 		},
 
@@ -200,16 +204,16 @@
 		},
 
 		shouldHideTitle: function() {
-			return _.every(this.pluck('hidden'));
+			return this.size() < 2;
 		},
 
 		setImage: function(model) {
 			this.each(function(m) {
-				m.set('hidden', false);
+				m.set('selected', false);
 			});
 
 			if (model) {
-				model.set('hidden', true);
+				model.set('selected', true);
 				// Bump images to top except for special "Randomize" images
 				if (!model.get('random')) {
 					model.get('header').timestamp = _.now();
@@ -220,13 +224,8 @@
 
 		removeImage: function() {
 			this.each(function(m) {
-				m.set('hidden', false);
+				m.set('selected', false);
 			});
-		},
-
-		shown: function() {
-			var filtered = this.where({ hidden: false });
-			return new api.HeaderTool.ChoiceList( filtered );
 		}
 	});
 
diff --git a/src/wp-includes/js/customize-views.js b/src/wp-includes/js/customize-views.js
index eb3d4aa..39ad65b 100644
--- a/src/wp-includes/js/customize-views.js
+++ b/src/wp-includes/js/customize-views.js
@@ -32,16 +32,18 @@
 
 		getHeight: function() {
 			var image = this.$el.find('img'),
-				saved = this.model.get('savedHeight'),
-				height = image.height() || saved,
-				headerImageData;
+				saved, height, headerImageData;
 
 			if (image.length) {
 				this.$el.find('.inner').hide();
 			} else {
 				this.$el.find('.inner').show();
+				return 40;
 			}
 
+			saved = this.model.get('savedHeight');
+			height = image.height() || saved;
+
 			// happens at ready
 			if (!height) {
 				headerImageData = api.get().header_image_data;
@@ -92,8 +94,6 @@
 	 * @constructor
 	 * @augments wp.Backbone.View
 	 */
-	(function () { // closures FTW
-	var lastHeight = 0;
 	api.HeaderTool.ChoiceView = wp.Backbone.View.extend({
 		template: wp.template('header-choice'),
 
@@ -110,7 +110,7 @@
 				this.model.get('choice')
 			];
 
-			this.listenTo(this.model, 'change', this.render);
+			this.listenTo(this.model, 'change:selected', this.toggleSelected);
 
 			if (_.contains(properties, api.get().header_image)) {
 				api.HeaderTool.currentHeader.set(this.extendedModel());
@@ -118,21 +118,21 @@
 		},
 
 		render: function() {
-			var model = this.model;
-
 			this.$el.html(this.template(this.extendedModel()));
 
-			if (model.get('random')) {
+			if (this.model.get('random')) {
+				this.$el.addClass('button display-options');
 				this.setPlaceholder(40);
 			}
-			else {
-				lastHeight = this.getHeight();
-			}
 
-			this.$el.toggleClass('hidden', model.get('hidden'));
+			this.toggleSelected();
 			return this;
 		},
 
+		toggleSelected: function() {
+			this.$el.toggleClass('selected', this.model.get('selected'));
+		},
+
 		extendedModel: function() {
 			var c = this.model.get('collection');
 			return _.extend(this.model.toJSON(), {
@@ -145,17 +145,26 @@
 		setPlaceholder: api.HeaderTool.CurrentView.prototype.setPlaceholder,
 
 		select: function() {
+			this.preventJump();
 			this.model.save();
 			api.HeaderTool.currentHeader.set(this.extendedModel());
 		},
 
+		preventJump: function() {
+			var container = $('.wp-full-overlay-sidebar-content'),
+				scroll = container.scrollTop();
+
+			_.defer(function() {
+				container.scrollTop(scroll);
+			});
+		},
+
 		removeImage: function(e) {
 			e.stopPropagation();
 			this.model.destroy();
 			this.remove();
 		}
 	});
-	})();
 
 
 	/**
@@ -174,15 +183,14 @@
 			this.listenTo(this.collection, 'add', this.addOne);
 			this.listenTo(this.collection, 'remove', this.render);
 			this.listenTo(this.collection, 'sort', this.render);
-			this.listenTo(this.collection, 'change:hidden', this.toggleTitle);
-			this.listenTo(this.collection, 'change:hidden', this.setMaxListHeight);
+			this.listenTo(this.collection, 'change', this.toggleList);
 			this.render();
 		},
 
 		render: function() {
 			this.$el.empty();
 			this.collection.each(this.addOne, this);
-			this.toggleTitle();
+			this.toggleList();
 		},
 
 		addOne: function(choice) {
@@ -192,12 +200,13 @@
 			this.$el.append(view.render().el);
 		},
 
-		toggleTitle: function() {
-			var title = this.$el.parents().prev('.customize-control-title');
+		toggleList: function() {
+			var title = this.$el.parents().prev('.customize-control-title'),
+				randomButton = this.$el.find('.random').parent();
 			if (this.collection.shouldHideTitle()) {
-				title.hide();
+				title.add(randomButton).hide();
 			} else {
-				title.show();
+				title.add(randomButton).show();
 			}
 		}
 	});
diff --git a/src/wp-includes/theme.php b/src/wp-includes/theme.php
index f66fd95..10bc026 100644
--- a/src/wp-includes/theme.php
+++ b/src/wp-includes/theme.php
@@ -1918,4 +1918,4 @@ function wp_customize_support_script() {
 		}());
 	</script>
 	<?php
-}
\ No newline at end of file
+}
