diff --git a/app/build.gradle b/app/build.gradle
index f30e821..07ef169 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,6 +4,7 @@ apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion 30
+    buildToolsVersion "29.0.3"
     defaultConfig {
         applicationId "me.ibrahimsn.particles"
         minSdkVersion 15
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 12d069b..23a1bc7 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -5,7 +5,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:background="@android:color/black"
+    android:background="@android:color/white"
     tools:context=".MainActivity">
 
     <me.ibrahimsn.particle.ParticleView
@@ -15,9 +15,10 @@
         app:particleCount="60"
         app:particleMinRadius="3"
         app:particleMaxRadius="10"
-        app:particlesBackgroundColor="#23262a"
+        app:particlesSpeed="Slow"
+        app:particlesBackgroundColor="@android:color/white"
         app:particleColor="@android:color/holo_green_dark"
         app:particleLineColor="@android:color/holo_green_dark"
-        app:particleLinesEnabled="true" />
+        app:particleLinesEnabled="false" />
 
 </FrameLayout>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 73aa31c..65aa408 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,13 +1,13 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.4.10'
+    ext.kotlin_version = '1.4.20'
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.0-alpha15'
+        classpath 'com.android.tools.build:gradle:4.1.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 2957ada..14d499a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip
diff --git a/particle/src/main/java/me/ibrahimsn/particle/ParticleView.kt b/particle/src/main/java/me/ibrahimsn/particle/ParticleView.kt
index 59a58a6..679d544 100644
--- a/particle/src/main/java/me/ibrahimsn/particle/ParticleView.kt
+++ b/particle/src/main/java/me/ibrahimsn/particle/ParticleView.kt
@@ -1,8 +1,10 @@
 package me.ibrahimsn.particle
 
 import android.content.Context
+import android.content.res.TypedArray
 import android.graphics.*
 import android.util.AttributeSet
+import android.util.Log
 import android.view.SurfaceHolder
 import android.view.SurfaceView
 import androidx.annotation.ColorInt
@@ -11,10 +13,11 @@ import kotlin.math.min
 import kotlin.math.sqrt
 import kotlin.random.Random
 
+
 class ParticleView @JvmOverloads constructor(
-    context: Context,
-    attrs: AttributeSet,
-    defStyleAttr: Int = R.attr.ParticleViewStyle
+        context: Context,
+        attrs: AttributeSet,
+        defStyleAttr: Int = R.attr.ParticleViewStyle
 ) : SurfaceView(context, attrs, defStyleAttr), SurfaceHolder.Callback {
 
     private val particles = mutableListOf<Particle>()
@@ -34,7 +37,7 @@ class ParticleView @JvmOverloads constructor(
     private var _particleMaxRadius = 10
 
     @ColorInt
-    private var _particlesBackgroundColor = Color.BLACK
+    private var _particlesBackgroundColor = Color.TRANSPARENT
 
     @ColorInt
     private var _particleColor = Color.WHITE
@@ -44,6 +47,8 @@ class ParticleView @JvmOverloads constructor(
 
     private var _particleLinesEnabled = true
 
+    private var _particlesSpeed = ParticlesSpeed.Default
+
     // Core Attributes
     var particleCount: Int
         get() = _particleCount
@@ -100,6 +105,12 @@ class ParticleView @JvmOverloads constructor(
             _particleLinesEnabled = value
         }
 
+    var particleSpeed: ParticlesSpeed
+        get() = _particlesSpeed
+        set(value) {
+            _particlesSpeed = value
+        }
+
     // Paints
     private val paintParticles: Paint = Paint().apply {
         isAntiAlias = true
@@ -121,47 +132,50 @@ class ParticleView @JvmOverloads constructor(
 
     private fun obtainStyledAttributes(attrs: AttributeSet, defStyleAttr: Int) {
         val typedArray = context.obtainStyledAttributes(
-            attrs,
-            R.styleable.ParticleView,
-            defStyleAttr,
-            0
+                attrs,
+                R.styleable.ParticleView,
+                defStyleAttr,
+                0
         )
 
         try {
             particleCount = typedArray.getInt(
-                R.styleable.ParticleView_particleCount,
-                particleCount
+                    R.styleable.ParticleView_particleCount,
+                    particleCount
             )
 
             particleMinRadius = typedArray.getInt(
-                R.styleable.ParticleView_particleMinRadius,
-                particleMinRadius
+                    R.styleable.ParticleView_particleMinRadius,
+                    particleMinRadius
             )
 
             particleMaxRadius = typedArray.getInt(
-                R.styleable.ParticleView_particleMaxRadius,
-                particleMaxRadius
+                    R.styleable.ParticleView_particleMaxRadius,
+                    particleMaxRadius
             )
 
             particlesBackgroundColor = typedArray.getColor(
-                R.styleable.ParticleView_particlesBackgroundColor,
-                particlesBackgroundColor
+                    R.styleable.ParticleView_particlesBackgroundColor,
+                    particlesBackgroundColor
             )
 
             particleColor = typedArray.getColor(
-                R.styleable.ParticleView_particleColor,
-                particleColor
+                    R.styleable.ParticleView_particleColor,
+                    particleColor
             )
 
             particleLineColor = typedArray.getColor(
-                R.styleable.ParticleView_particleLineColor,
-                particleLineColor
+                    R.styleable.ParticleView_particleLineColor,
+                    particleLineColor
             )
 
             particleLinesEnabled = typedArray.getBoolean(
-                R.styleable.ParticleView_particleLinesEnabled,
-                particleLinesEnabled
+                    R.styleable.ParticleView_particleLinesEnabled,
+                    particleLinesEnabled
             )
+
+            particleSpeed =  typedArray.getEnum(R.styleable.ParticleView_particlesSpeed, ParticlesSpeed.Default)
+
         } catch (e: Exception) {
             e.printStackTrace()
         } finally {
@@ -210,14 +224,14 @@ class ParticleView @JvmOverloads constructor(
             particles.clear()
             for (i in 0 until particleCount) {
                 particles.add(
-                    Particle(
-                        Random.nextInt(particleMinRadius, particleMaxRadius).toFloat(),
-                        Random.nextInt(0, width).toFloat(),
-                        Random.nextInt(0, height).toFloat(),
-                        Random.nextInt(-2, 2),
-                        Random.nextInt(-2, 2),
-                        Random.nextInt(150, 255)
-                    )
+                        Particle(
+                                Random.nextInt(particleMinRadius, particleMaxRadius).toFloat(),
+                                Random.nextInt(0, width).toFloat(),
+                                Random.nextInt(0, height).toFloat(),
+                                Random.nextInt(-2, 2),
+                                Random.nextInt(-2, 2),
+                                Random.nextInt(150, 255)
+                        )
                 )
             }
         }
@@ -232,10 +246,12 @@ class ParticleView @JvmOverloads constructor(
             setupParticles()
 
             while (running) {
+                if (particleSpeed == ParticlesSpeed.Slow)
+                    sleep(20L)
                 try {
                     canvas = holder.lockCanvas()
 
-                    synchronized (holder) {
+                    synchronized(holder) {
                         // Clear screen every frame
                         canvas?.drawColor(particlesBackgroundColor, PorterDuff.Mode.SRC)
 
@@ -312,4 +328,14 @@ class ParticleView @JvmOverloads constructor(
             path.reset()
         }
     }
+
+
+    enum class ParticlesSpeed(val value: Int) {
+        Default(0),
+        Slow(1),
+    }
+
+    inline fun <reified T : Enum<T>> TypedArray.getEnum(index: Int, default: T) =
+            getInt(index, -1).let { if (it >= 0) enumValues<T>()[it] else default
+            }
 }
\ No newline at end of file
diff --git a/particle/src/main/res/values/attrs.xml b/particle/src/main/res/values/attrs.xml
index b581210..9845d4f 100644
--- a/particle/src/main/res/values/attrs.xml
+++ b/particle/src/main/res/values/attrs.xml
@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <declare-styleable name="ParticleView">
+        <attr name="particlesSpeed" format="enum">
+            <enum name="Slow" value="1"/>
+            <enum name="Default" value="0"/>
+        </attr>
+        <!--<attr name="particlesSpeed" format="integer"/-->>
         <attr name="particleCount" format="integer" />
         <attr name="particleMinRadius" format="integer" />
         <attr name="particleMaxRadius" format="integer" />