diff --git a/Sources/libewol/ewol/widget/ButtonColor.cpp b/Sources/libewol/ewol/widget/ButtonColor.cpp
index 966307f5..07594865 100644
--- a/Sources/libewol/ewol/widget/ButtonColor.cpp
+++ b/Sources/libewol/ewol/widget/ButtonColor.cpp
@@ -276,6 +276,6 @@ void ewol::ButtonColor::OnReceiveMessage(ewol::EObject * CallerObject, const cha
 		        (uint8_t)(tmpColor.alpha * 0xFF));
 		//set the new label ...
 		SetLabel(colorText);
-		
+		GenerateEventId(ewolEventButtonColorChange);
 	}
 }
\ No newline at end of file
diff --git a/Sources/libewol/ewol/widget/ColorBar.cpp b/Sources/libewol/ewol/widget/ColorBar.cpp
index 42f65e09..0915e9c8 100644
--- a/Sources/libewol/ewol/widget/ColorBar.cpp
+++ b/Sources/libewol/ewol/widget/ColorBar.cpp
@@ -287,9 +287,13 @@ bool ewol::ColorBar::OnEventInput(int32_t IdInput, eventInputType_te typeEvent,
 			        (uint8_t)(estimateColor.alpha * 0xFF));
 			EWOL_DEBUG("new color : " << colorText);
 			*/
-			m_currentColor = estimateColor;
-			GenerateEventId(ewolEventColorBarChange);
-			
+			if(    m_currentColor.red   != estimateColor.red
+			    || m_currentColor.green != estimateColor.green
+			    || m_currentColor.blue  != estimateColor.blue
+			    || m_currentColor.alpha != estimateColor.alpha) {
+				m_currentColor = estimateColor;
+				GenerateEventId(ewolEventColorBarChange);
+			}
 			return true;
 		}
 	}