diff --git a/examples/gui/data/js/controls.js b/examples/gui/data/js/controls.js
index b4f4c1a..d9422bd 100644
--- a/examples/gui/data/js/controls.js
+++ b/examples/gui/data/js/controls.js
@@ -21,6 +21,7 @@ const C_WETASPHALT = 3;
 const C_SUNFLOWER = 4;
 const C_CARROT = 5;
 const C_ALIZARIN = 6;
+const C_NONE = 7;
 
 function colorClass(colorId){
   colorId = Number(colorId);
@@ -52,8 +53,13 @@ function colorClass(colorId){
     case C_ALIZARIN:
       return "alizarin"
     break;
+
+    case C_NONE:
+      return ""
+    break;
+
     default:
-      return "alizarin";
+      return "";
   }
 }
 
diff --git a/examples/gui/gui.ino b/examples/gui/gui.ino
index e2558f3..8a34296 100644
--- a/examples/gui/gui.ino
+++ b/examples/gui/gui.ino
@@ -32,15 +32,23 @@ void setup(void) {
     Serial.println(WiFi.localIP());
   */
 
-  ESPUI.label("Status:", 0, "Stop");
-  ESPUI.label("Millis:", 1, "0");
-  ESPUI.button("Push Button", &buttonCallback, 2);
-  ESPUI.button("Other Button",  &buttonExample, 3, "Press" );
-  ESPUI.pad("Pad with center", true, &padExample, 4);
-  ESPUI.pad("Pad without center", false, &padExample, 5);
-  ESPUI.switcher("Switch one", false, &switchExample, 6);
-  ESPUI.switcher("Switch two", true, &otherSwitchExample, 0);
+  ESPUI.label("Status:", COLOR_TURQUOISE, "Stop");
+  ESPUI.label("Millis:", COLOR_EMERALD, "0");
+  ESPUI.button("Push Button", &buttonCallback, COLOR_PETERRIVER);
+  ESPUI.button("Other Button",  &buttonExample, COLOR_WETASPHALT, "Press" );
+  ESPUI.pad("Pad with center", true, &padExample, COLOR_SUNFLOWER);
+  ESPUI.pad("Pad without center", false, &padExample, COLOR_CARROT);
+  ESPUI.switcher("Switch one", false, &switchExample, COLOR_ALIZARIN);
+  ESPUI.switcher("Switch two", true, &otherSwitchExample, COLOR_TURQUOISE);
 
+
+  #define COLOR_TURQUOISE 0
+  #define COLOR_EMERALD 1
+  #define COLOR_PETERRIVER 2
+  #define COLOR_WETASPHALT 3
+  #define COLOR_SUNFLOWER 4
+  #define COLOR_CARROT 5
+  #define COLOR_ALIZARIN 6
   ESPUI.begin("ESP32 Control");
 
 }
diff --git a/src/ESPUI.h b/src/ESPUI.h
index 0cac448..80a26e0 100644
--- a/src/ESPUI.h
+++ b/src/ESPUI.h
@@ -63,6 +63,7 @@ typedef struct Control {
 #define COLOR_SUNFLOWER 4
 #define COLOR_CARROT 5
 #define COLOR_ALIZARIN 6
+#define COLOR_NONE 6
 
 
 class ESPUIClass {