diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php
index 1c84d42009..43e6fbda13 100644
--- a/wp-admin/includes/ajax-actions.php
+++ b/wp-admin/includes/ajax-actions.php
@@ -2600,8 +2600,13 @@ function wp_ajax_save_user_color_scheme() {
 		wp_send_json_error();
 	}
 
+	$previous_color_scheme = get_user_meta( get_current_user_id(), 'admin_color', true );
 	update_user_meta( get_current_user_id(), 'admin_color', $color_scheme );
-	wp_send_json_success();
+
+	wp_send_json_success( array(
+		'previousScheme' => 'admin-color-' . $previous_color_scheme,
+		'currentScheme'  => 'admin-color-' . $color_scheme
+	) );
 }
 
 /**
diff --git a/wp-admin/js/user-profile.js b/wp-admin/js/user-profile.js
index ae4b97ab89..ba99586c59 100644
--- a/wp-admin/js/user-profile.js
+++ b/wp-admin/js/user-profile.js
@@ -119,6 +119,10 @@
 					action:       'save-user-color-scheme',
 					color_scheme: $this.children( 'input[name="admin_color"]' ).val(),
 					nonce:        $('#color-nonce').val()
+				}).done( function( response ) {
+					if ( response.success ) {
+						$( 'body' ).removeClass( response.data.previousScheme ).addClass( response.data.currentScheme );
+					}
 				});
 			}
 		});
diff --git a/wp-admin/js/user-profile.min.js b/wp-admin/js/user-profile.min.js
index 1472b22e9d..bcab6c0f24 100644
--- a/wp-admin/js/user-profile.min.js
+++ b/wp-admin/js/user-profile.min.js
@@ -1 +1 @@
-!function(a){function b(){var b,c=a("#pass1").val(),d=a("#pass2").val();if(a("#pass-strength-result").removeClass("short bad good strong"),!c)return void a("#pass-strength-result").html(pwsL10n.empty);switch(b=wp.passwordStrength.meter(c,wp.passwordStrength.userInputBlacklist(),d)){case 2:a("#pass-strength-result").addClass("bad").html(pwsL10n.bad);break;case 3:a("#pass-strength-result").addClass("good").html(pwsL10n.good);break;case 4:a("#pass-strength-result").addClass("strong").html(pwsL10n.strong);break;case 5:a("#pass-strength-result").addClass("short").html(pwsL10n.mismatch);break;default:a("#pass-strength-result").addClass("short").html(pwsL10n["short"])}}a(document).ready(function(){var c,d,e,f,g=a("#display_name");a("#pass1").val("").keyup(b),a("#pass2").val("").keyup(b),a("#pass-strength-result").show(),a(".color-palette").click(function(){a(this).siblings('input[name="admin_color"]').prop("checked",!0)}),g.length&&a("#first_name, #last_name, #nickname").bind("blur.user_profile",function(){var b=[],c={display_nickname:a("#nickname").val()||"",display_username:a("#user_login").val()||"",display_firstname:a("#first_name").val()||"",display_lastname:a("#last_name").val()||""};c.display_firstname&&c.display_lastname&&(c.display_firstlast=c.display_firstname+" "+c.display_lastname,c.display_lastfirst=c.display_lastname+" "+c.display_firstname),a.each(a("option",g),function(a,c){b.push(c.value)}),a.each(c,function(d,e){if(e){var f=e.replace(/<\/?[a-z][^>]*>/gi,"");c[d].length&&-1===a.inArray(f,b)&&(b.push(f),a("<option />",{text:f}).appendTo(g))}})}),c=a("#color-picker"),d=a("#colors-css"),e=a("input#user_id").val(),f=a('input[name="checkuser_id"]').val(),c.on("click.colorpicker",".color-option",function(){var b,c=a(this);if(!c.hasClass("selected")&&(c.siblings(".selected").removeClass("selected"),c.addClass("selected").find('input[type="radio"]').prop("checked",!0),e===f)){if(0===d.length&&(d=a('<link rel="stylesheet" />').appendTo("head")),d.attr("href",c.children(".css_url").val()),"undefined"!=typeof wp&&wp.svgPainter){try{b=a.parseJSON(c.children(".icon_colors").val())}catch(g){}b&&(wp.svgPainter.setColors(b),wp.svgPainter.paint())}a.post(ajaxurl,{action:"save-user-color-scheme",color_scheme:c.children('input[name="admin_color"]').val(),nonce:a("#color-nonce").val()})}})}),a("#destroy-sessions").on("click",function(b){var c=a(this);wp.ajax.post("destroy-sessions",{nonce:a("#_wpnonce").val(),user_id:a("#user_id").val()}).done(function(a){c.prop("disabled",!0),c.siblings(".notice").remove(),c.before('<div class="notice notice-success inline"><p>'+a.message+"</p></div>")}).fail(function(a){c.siblings(".notice").remove(),c.before('<div class="notice notice-error inline"><p>'+a.message+"</p></div>")}),b.preventDefault()})}(jQuery);
\ No newline at end of file
+!function(a){function b(){var b,c=a("#pass1").val(),d=a("#pass2").val();if(a("#pass-strength-result").removeClass("short bad good strong"),!c)return void a("#pass-strength-result").html(pwsL10n.empty);switch(b=wp.passwordStrength.meter(c,wp.passwordStrength.userInputBlacklist(),d)){case 2:a("#pass-strength-result").addClass("bad").html(pwsL10n.bad);break;case 3:a("#pass-strength-result").addClass("good").html(pwsL10n.good);break;case 4:a("#pass-strength-result").addClass("strong").html(pwsL10n.strong);break;case 5:a("#pass-strength-result").addClass("short").html(pwsL10n.mismatch);break;default:a("#pass-strength-result").addClass("short").html(pwsL10n["short"])}}a(document).ready(function(){var c,d,e,f,g=a("#display_name");a("#pass1").val("").keyup(b),a("#pass2").val("").keyup(b),a("#pass-strength-result").show(),a(".color-palette").click(function(){a(this).siblings('input[name="admin_color"]').prop("checked",!0)}),g.length&&a("#first_name, #last_name, #nickname").bind("blur.user_profile",function(){var b=[],c={display_nickname:a("#nickname").val()||"",display_username:a("#user_login").val()||"",display_firstname:a("#first_name").val()||"",display_lastname:a("#last_name").val()||""};c.display_firstname&&c.display_lastname&&(c.display_firstlast=c.display_firstname+" "+c.display_lastname,c.display_lastfirst=c.display_lastname+" "+c.display_firstname),a.each(a("option",g),function(a,c){b.push(c.value)}),a.each(c,function(d,e){if(e){var f=e.replace(/<\/?[a-z][^>]*>/gi,"");c[d].length&&-1===a.inArray(f,b)&&(b.push(f),a("<option />",{text:f}).appendTo(g))}})}),c=a("#color-picker"),d=a("#colors-css"),e=a("input#user_id").val(),f=a('input[name="checkuser_id"]').val(),c.on("click.colorpicker",".color-option",function(){var b,c=a(this);if(!c.hasClass("selected")&&(c.siblings(".selected").removeClass("selected"),c.addClass("selected").find('input[type="radio"]').prop("checked",!0),e===f)){if(0===d.length&&(d=a('<link rel="stylesheet" />').appendTo("head")),d.attr("href",c.children(".css_url").val()),"undefined"!=typeof wp&&wp.svgPainter){try{b=a.parseJSON(c.children(".icon_colors").val())}catch(g){}b&&(wp.svgPainter.setColors(b),wp.svgPainter.paint())}a.post(ajaxurl,{action:"save-user-color-scheme",color_scheme:c.children('input[name="admin_color"]').val(),nonce:a("#color-nonce").val()}).done(function(b){b.success&&a("body").removeClass(b.data.previousScheme).addClass(b.data.currentScheme)})}})}),a("#destroy-sessions").on("click",function(b){var c=a(this);wp.ajax.post("destroy-sessions",{nonce:a("#_wpnonce").val(),user_id:a("#user_id").val()}).done(function(a){c.prop("disabled",!0),c.siblings(".notice").remove(),c.before('<div class="notice notice-success inline"><p>'+a.message+"</p></div>")}).fail(function(a){c.siblings(".notice").remove(),c.before('<div class="notice notice-error inline"><p>'+a.message+"</p></div>")}),b.preventDefault()})}(jQuery);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8cc321414b..6cfedebf9c 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31399';
+$wp_version = '4.2-alpha-31400';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.