diff --git a/src/main/haxework/gui/list/HScrollSkin.hx b/src/main/haxework/gui/list/HScrollSkin.hx
index 5e2a6ac..cec38ac 100755
--- a/src/main/haxework/gui/list/HScrollSkin.hx
+++ b/src/main/haxework/gui/list/HScrollSkin.hx
@@ -9,7 +9,7 @@ class HScrollSkin implements ISkin<ScrollView> {
   public var foreColor(default, default):Int;
   public var backColor(default, default):Int;
 
-  public function new(?foreColor:Int = 0xffffff, ?backColor:Int = 0x707070) {
+  public function new(foreColor:Int = 0xffffff, backColor:Int = 0x707070) {
     this.foreColor = foreColor;
     this.backColor = backColor;
   }
@@ -17,10 +17,12 @@ class HScrollSkin implements ISkin<ScrollView> {
   public function draw(view:ScrollView):Void {
     var graphics:Graphics = view.contentAsSprite.graphics;
     graphics.clear();
-    graphics.beginFill(backColor);
-    graphics.drawRect(0, 0, view.width, view.height);
-    graphics.beginFill(foreColor);
-    graphics.drawRect(view.width * view.position, 0, view.width * view.ratio, view.height);
-    graphics.endFill();
+    if (view.ratio < 1) {
+      graphics.beginFill(backColor);
+      graphics.drawRect(0, 0, view.width, view.height);
+      graphics.beginFill(foreColor);
+      graphics.drawRect(view.width * view.position, 0, view.width * view.ratio, view.height);
+      graphics.endFill();
+    }
   }
 }
\ No newline at end of file
diff --git a/src/main/haxework/gui/list/VScrollSkin.hx b/src/main/haxework/gui/list/VScrollSkin.hx
index b41bf4b..1895442 100755
--- a/src/main/haxework/gui/list/VScrollSkin.hx
+++ b/src/main/haxework/gui/list/VScrollSkin.hx
@@ -9,7 +9,7 @@ class VScrollSkin implements ISkin<ScrollView> {
   public var foreColor(default, default):Int;
   public var backColor(default, default):Int;
 
-  public function new(?foreColor:Int = 0xffffff, ?backColor:Int = 0x707070) {
+  public function new(foreColor:Int = 0xffffff, backColor:Int = 0x707070) {
     this.foreColor = foreColor;
     this.backColor = backColor;
   }
@@ -17,10 +17,12 @@ class VScrollSkin implements ISkin<ScrollView> {
   public function draw(view:ScrollView):Void {
     var graphics:Graphics = view.contentAsSprite.graphics;
     graphics.clear();
-    graphics.beginFill(backColor);
-    graphics.drawRect(0, 0, view.width, view.height);
-    graphics.beginFill(foreColor);
-    graphics.drawRect(0, view.height * view.position, view.width, view.height * view.ratio);
-    graphics.endFill();
+    if (view.ratio < 1) {
+      graphics.beginFill(backColor);
+      graphics.drawRect(0, 0, view.width, view.height);
+      graphics.beginFill(foreColor);
+      graphics.drawRect(0, view.height * view.position, view.width, view.height * view.ratio);
+      graphics.endFill();
+    }
   }
 }
\ No newline at end of file
diff --git a/src/main/haxework/gui/skin/ButtonColorSkin.hx b/src/main/haxework/gui/skin/ButtonColorSkin.hx
index ec00cd9..17e5064 100755
--- a/src/main/haxework/gui/skin/ButtonColorSkin.hx
+++ b/src/main/haxework/gui/skin/ButtonColorSkin.hx
@@ -1,9 +1,8 @@
 package haxework.gui.skin;
 
-import haxework.gui.utils.ColorUtils;
-import haxework.gui.ButtonView.ButtonState;
 import flash.display.Graphics;
-import flash.display.Sprite;
+import haxework.gui.ButtonView.ButtonState;
+import haxework.gui.utils.ColorUtils;
 
 class ButtonColorSkin implements ISkin<ButtonView> {
 
@@ -12,7 +11,7 @@ class ButtonColorSkin implements ISkin<ButtonView> {
   public var disable(default, default):Int;
   private var colors:Map<ButtonState, Int>;
 
-  public function new(?color:Int = 0xffffff, ?alpha:Float = 1.0) {
+  public function new(color:Int = 0xffffff, alpha:Float = 1.0) {
     this.color = color;
     this.alpha = alpha;
   }