diff --git a/README.md b/README.md
index ecead47..49ef29c 100644
--- a/README.md
+++ b/README.md
@@ -103,6 +103,7 @@ pinView.setItemBackground(getResources().getDrawable(R.drawable.item_background)
 pinView.setItemBackgroundResources(R.drawable.item_background);
 pinView.setHideLineWhenFilled(false);
 pinView.setPasswordHidden(false);
+pinView.setError(false);
 pinView.setTransformationMethod(new PasswordTransformationMethod());
 ```
 
diff --git a/pinview/src/main/java/com/chaos/view/PinView.java b/pinview/src/main/java/com/chaos/view/PinView.java
index 9ff2d73..bc4f2ff 100644
--- a/pinview/src/main/java/com/chaos/view/PinView.java
+++ b/pinview/src/main/java/com/chaos/view/PinView.java
@@ -71,8 +71,9 @@ public class PinView extends AppCompatEditText {
 
     private static final InputFilter[] NO_FILTERS = new InputFilter[0];
 
-    private static final int[] HIGHLIGHT_STATES = new int[]{
-            android.R.attr.state_selected};
+    private static final int[] HIGHLIGHT_STATES = new int[]{android.R.attr.state_selected};
+    private static final int[] FILLED_STATES = new int[]{R.attr.state_filled};
+    private static final int[] ERROR_STATES = new int[]{R.attr.state_error};
 
     private static final int VIEW_TYPE_RECTANGLE = 0;
     private static final int VIEW_TYPE_LINE = 1;
@@ -103,6 +104,7 @@ public class PinView extends AppCompatEditText {
     private ValueAnimator mDefaultAddAnimator;
     private boolean isAnimationEnable = false;
     private boolean isPasswordHidden;
+    private boolean isError;
 
     private Blink mBlink;
     private boolean isCursorVisible;
@@ -197,6 +199,16 @@ public void setPasswordHidden(boolean hidden) {
         requestLayout();
     }
 
+    /**
+     * Set error state for the PinView
+     *
+     * @param error True to enable the error state, false to remove the error state
+     */
+    public void setError(boolean error) {
+        isError = error;
+        requestLayout();
+    }
+
     /**
      * new behavior: reveal or hide the pins programmatically
      *
@@ -369,7 +381,16 @@ private void drawPinView(Canvas canvas) {
         int highlightIdx = getText().length();
         for (int i = 0; i < mPinItemCount; i++) {
             boolean highlight = isFocused() && highlightIdx == i;
-            mPaint.setColor(highlight ? getLineColorForState(HIGHLIGHT_STATES) : mCurLineColor);
+            boolean filled = highlightIdx > i;
+            if (isError) {
+                mPaint.setColor(getLineColorForState(ERROR_STATES));
+            } else {
+                if (highlight) {
+                    mPaint.setColor(getLineColorForState(HIGHLIGHT_STATES));
+                } else {
+                    mPaint.setColor(filled ? getLineColorForState(FILLED_STATES) : mCurLineColor);
+                }
+            }
 
             updateItemRectF(i);
             updateCenterPoint();
@@ -901,6 +922,7 @@ public void setTextSize(int unit, float size) {
     }
 
     //region ItemBackground
+
     /**
      * Set the item background to a given resource. The resource should refer to
      * a Drawable object or 0 to remove the item background.
diff --git a/pinview/src/main/res/values/attrs.xml b/pinview/src/main/res/values/attrs.xml
index 135d002..d09a937 100644
--- a/pinview/src/main/res/values/attrs.xml
+++ b/pinview/src/main/res/values/attrs.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ Copyright 2017 Chaos Leong
   ~
   ~ Licensed under the Apache License, Version 2.0 (the "License");
@@ -38,5 +37,7 @@
         <attr name="cursorColor" format="reference|color" />
         <attr name="android:itemBackground" />
         <attr name="hideLineWhenFilled" format="boolean" />
+        <attr name="state_filled" format="boolean" />
+        <attr name="state_error" format="boolean" />
     </declare-styleable>
 </resources>
\ No newline at end of file
diff --git a/sample/src/main/res/color/line_colors.xml b/sample/src/main/res/color/line_colors.xml
index 94d2d84..d8f5603 100644
--- a/sample/src/main/res/color/line_colors.xml
+++ b/sample/src/main/res/color/line_colors.xml
@@ -15,7 +15,9 @@
   ~ limitations under the License.
   -->
 
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
+<selector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item android:color="@color/line_error" app:state_error="true" />
+    <item android:color="@color/line_filled" app:state_filled="true" />
     <item android:color="@color/line_selected" android:state_selected="true" />
     <item android:color="@color/line_focused" android:state_focused="true" />
     <item android:color="@color/line_default" />
diff --git a/sample/src/main/res/values/colors.xml b/sample/src/main/res/values/colors.xml
index d0db3f4..2a3df55 100644
--- a/sample/src/main/res/values/colors.xml
+++ b/sample/src/main/res/values/colors.xml
@@ -27,4 +27,6 @@
     <color name="line_selected">#E91E63</color>
     <color name="line_focused">#3F51B5</color>
     <color name="line_default">#C5CAE9</color>
+    <color name="line_filled">#C2D422</color>
+    <color name="line_error">#FFDE1A</color>
 </resources>