diff --git a/ui/jquery.ui.effect.js b/ui/jquery.ui.effect.js
index 37ca48795..0c02c8836 100644
--- a/ui/jquery.ui.effect.js
+++ b/ui/jquery.ui.effect.js
@@ -19,24 +19,24 @@ $.effects = {
 };
 
 /*!
- * jQuery Color Animations v2.0.0
- * http://jquery.com/
+ * jQuery Color Animations v2.1.1
+ * https://github.com/jquery/jquery-color
  *
  * Copyright 2012 jQuery Foundation and other contributors
  * Released under the MIT license.
  * http://jquery.org/license
  *
- * Date: Mon Aug 13 13:41:02 2012 -0500
+ * Date: Sun Oct 28 15:08:06 2012 -0400
  */
 (function( jQuery, undefined ) {
 
-	var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color columnRuleColor outlineColor textDecorationColor textEmphasisColor".split(" "),
+	var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color columnRuleColor outlineColor textDecorationColor textEmphasisColor",
 
 	// plusequals test for += 100 -= 100
 	rplusequals = /^([\-+])=\s*(\d+\.?\d*)/,
 	// a set of RE's that can match strings and generate color tuples.
 	stringParsers = [{
-			re: /rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
+			re: /rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/,
 			parse: function( execResult ) {
 				return [
 					execResult[ 1 ],
@@ -46,7 +46,7 @@ $.effects = {
 				];
 			}
 		}, {
-			re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
+			re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/,
 			parse: function( execResult ) {
 				return [
 					execResult[ 1 ] * 2.55,
@@ -76,7 +76,7 @@ $.effects = {
 				];
 			}
 		}, {
-			re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
+			re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/,
 			space: "hsla",
 			parse: function( execResult ) {
 				return [
@@ -293,7 +293,7 @@ color.fn = jQuery.extend( color.prototype, {
 					});
 
 					// everything defined but alpha?
-					if ( inst[ cache ] && $.inArray( null, inst[ cache ].slice( 0, 3 ) ) < 0 ) {
+					if ( inst[ cache ] && jQuery.inArray( null, inst[ cache ].slice( 0, 3 ) ) < 0 ) {
 						// use the default of 1
 						inst[ cache ][ 3 ] = 1;
 						if ( space.from ) {
@@ -481,8 +481,10 @@ spaces.hsla.to = function ( rgba ) {
 		h = ( 60 * ( r - g ) / diff ) + 240;
 	}
 
-	if ( l === 0 || l === 1 ) {
-		s = l;
+	// chroma (diff) == 0 means greyscale which, by definition, saturation = 0%
+	// otherwise, saturation is based on the ratio of chroma (diff) to lightness (add)
+	if ( diff === 0 ) {
+		s = 0;
 	} else if ( l <= 0.5 ) {
 		s = diff / add;
 	} else {
@@ -586,51 +588,58 @@ each( spaces, function( spaceName, space ) {
 	});
 });
 
-// add .fx.step functions
-each( stepHooks, function( i, hook ) {
-	jQuery.cssHooks[ hook ] = {
-		set: function( elem, value ) {
-			var parsed, curElem,
-				backgroundColor = "";
+// add cssHook and .fx.step function for each named hook.
+// accept a space separated string of properties
+color.hook = function( hook ) {
+	var hooks = hook.split( " " );
+	each( hooks, function( i, hook ) {
+		jQuery.cssHooks[ hook ] = {
+			set: function( elem, value ) {
+				var parsed, curElem,
+					backgroundColor = "";
 
-			if ( jQuery.type( value ) !== "string" || ( parsed = stringParse( value ) ) ) {
-				value = color( parsed || value );
-				if ( !support.rgba && value._rgba[ 3 ] !== 1 ) {
-					curElem = hook === "backgroundColor" ? elem.parentNode : elem;
-					while (
-						(backgroundColor === "" || backgroundColor === "transparent") &&
-						curElem && curElem.style
-					) {
-						try {
-							backgroundColor = jQuery.css( curElem, "backgroundColor" );
-							curElem = curElem.parentNode;
-						} catch ( e ) {
+				if ( jQuery.type( value ) !== "string" || ( parsed = stringParse( value ) ) ) {
+					value = color( parsed || value );
+					if ( !support.rgba && value._rgba[ 3 ] !== 1 ) {
+						curElem = hook === "backgroundColor" ? elem.parentNode : elem;
+						while (
+							(backgroundColor === "" || backgroundColor === "transparent") &&
+							curElem && curElem.style
+						) {
+							try {
+								backgroundColor = jQuery.css( curElem, "backgroundColor" );
+								curElem = curElem.parentNode;
+							} catch ( e ) {
+							}
 						}
+
+						value = value.blend( backgroundColor && backgroundColor !== "transparent" ?
+							backgroundColor :
+							"_default" );
 					}
 
-					value = value.blend( backgroundColor && backgroundColor !== "transparent" ?
-						backgroundColor :
-						"_default" );
+					value = value.toRgbaString();
 				}
+				try {
+					elem.style[ hook ] = value;
+				} catch( e ) {
+					// wrapped to prevent IE from throwing errors on "invalid" values like 'auto' or 'inherit'
+				}
+			}
+		};
+		jQuery.fx.step[ hook ] = function( fx ) {
+			if ( !fx.colorInit ) {
+				fx.start = color( fx.elem, hook );
+				fx.end = color( fx.end );
+				fx.colorInit = true;
+			}
+			jQuery.cssHooks[ hook ].set( fx.elem, fx.start.transition( fx.end, fx.pos ) );
+		};
+	});
 
-				value = value.toRgbaString();
-			}
-			try {
-				elem.style[ hook ] = value;
-			} catch( error ) {
-				// wrapped to prevent IE from throwing errors on "invalid" values like 'auto' or 'inherit'
-			}
-		}
-	};
-	jQuery.fx.step[ hook ] = function( fx ) {
-		if ( !fx.colorInit ) {
-			fx.start = color( fx.elem, hook );
-			fx.end = color( fx.end );
-			fx.colorInit = true;
-		}
-		jQuery.cssHooks[ hook ].set( fx.elem, fx.start.transition( fx.end, fx.pos ) );
-	};
-});
+};
+
+color.hook( stepHooks );
 
 jQuery.cssHooks.borderColor = {
 	expand: function( value ) {
@@ -674,7 +683,6 @@ colors = jQuery.Color.names = {
 })( jQuery );
 
 
-
 /******************************************************************************/
 /****************************** CLASS ANIMATIONS ******************************/
 /******************************************************************************/