Index: /CKEditor/trunk/_source/lang/en.js
===================================================================
--- /CKEditor/trunk/_source/lang/en.js	(revision 3174)
+++ /CKEditor/trunk/_source/lang/en.js	(revision 3175)
@@ -536,4 +536,6 @@
 	colorButton :
 	{
+		textColorTitle : 'Text Color',
+		bgColorTitle : 'Background Color',
 		auto : 'Automatic',
 		more : 'More Colors...'
Index: /CKEditor/trunk/_source/plugins/colorbutton/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/colorbutton/plugin.js	(revision 3174)
+++ /CKEditor/trunk/_source/plugins/colorbutton/plugin.js	(revision 3175)
@@ -16,13 +16,13 @@
 			clickFn;
 
-		addButton( 'TextColor', 'fore' );
-		addButton( 'BGColor', 'back' );
+		addButton( 'TextColor', 'fore', lang.textColorTitle );
+		addButton( 'BGColor', 'back', lang.bgColorTitle );
 
-		function addButton( name, type )
+		function addButton( name, type, title )
 		{
 			editor.ui.add( name, CKEDITOR.UI_PANELBUTTON,
 				{
 					label : lang.label,
-					title : lang.panelTitle,
+					title : title,
 					className : 'cke_button_' + name.toLowerCase(),
 
Index: /CKEditor/trunk/_source/plugins/panelbutton/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/panelbutton/plugin.js	(revision 3174)
+++ /CKEditor/trunk/_source/plugins/panelbutton/plugin.js	(revision 3175)
@@ -91,4 +91,22 @@
 				},
 				this );
+			var keyDownFn = CKEDITOR.tools.addFunction( function( ev, element ){
+				
+				ev = new CKEDITOR.dom.event( ev ); 
+				var keystroke = ev.getKeystroke();
+				switch ( keystroke )
+				{
+					case 13 :					// ENTER
+					case 32 :					// SPACE
+						// Show panel  
+						CKEDITOR.tools.callFunction( clickFn, element );
+						break;
+					default :
+						// Delegate the default behavior to toolbar button key handling.
+						instance.onkey( instance,  keystroke );
+				}
+				// Avoid subsequent focus grab on editor document.
+				ev.preventDefault();
+			});
 
 			var label = this.label || '';
@@ -127,5 +145,5 @@
 
 			output.push(
-//					' onkeydown="return CKEDITOR.ui.button._.keydown(', index, ', event);"' +
+					' onkeydown="CKEDITOR.tools.callFunction( ', keyDownFn, ', event, this );"' +
 					' onclick="CKEDITOR.tools.callFunction(', clickFn, ', this);">' +
 						'<span class="cke_icon"></span>' +
Index: /CKEditor/trunk/_source/plugins/richcombo/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/richcombo/plugin.js	(revision 3174)
+++ /CKEditor/trunk/_source/plugins/richcombo/plugin.js	(revision 3175)
@@ -83,5 +83,4 @@
 		{
 			var id = 'cke_' + this.id;
-
 			var clickFn = CKEDITOR.tools.addFunction( function( $element )
 				{
@@ -111,4 +110,35 @@
 				},
 				this );
+				
+			var instance = {
+				id : id,
+				combo : this,
+				focus : function()
+				{
+					var element = CKEDITOR.document.getById( id ).getChild( 1 );
+					element.focus();
+				},
+				execute : clickFn
+			};
+			
+			var keyDownFn = CKEDITOR.tools.addFunction( function( ev, element ){
+				
+				ev = new CKEDITOR.dom.event( ev ); 
+				var keystroke = ev.getKeystroke();
+				switch ( keystroke )
+				{
+					case 13 :					// ENTER
+					case 32 :					// SPACE
+						// Show panel  
+						CKEDITOR.tools.callFunction( clickFn, element );
+						break;
+					default :
+						// Delegate the default behavior to toolbar button key handling.
+						instance.onkey( instance,  keystroke );
+				}
+				
+				// Avoid subsequent focus grab on editor document.
+				ev.preventDefault();
+			});
 			
 			output.push(
@@ -119,5 +149,5 @@
 
 			output.push(
-				 '">' +
+				'">' +
 					'<span class=cke_label>', this.label, '</span>' +
 					'<a hidefocus=true title="', this.title, '" tabindex="-1" href="javascript:void(\'', this.label, '\')"' );
@@ -141,5 +171,5 @@
 
 			output.push(
-//					' onkeydown="return CKEDITOR.ui.button._.keydown(', id, ', event);"' +
+					' onkeydown="CKEDITOR.tools.callFunction( ', keyDownFn, ', event, this );"' +
 					' onmousedown="CKEDITOR.tools.callFunction(', clickFn, ', this);">' +
 						'<span id="', id, '_text" class=cke_text>&nbsp;</span>' +
@@ -150,15 +180,6 @@
 			if ( this.onRender )
 				this.onRender();
-
-			return {
-				id : id,
-				combo : this,
-				focus : function()
-				{
-					var element = CKEDITOR.document.getById( id ).getChild( 1 );
-					element.focus();
-				},
-				execute : clickFn
-			};
+				
+			return instance;
 		},