diff --git a/colorpicker-compose/api/colorpicker-compose.api b/colorpicker-compose/api/colorpicker-compose.api
index e8e9381..775cf0f 100644
--- a/colorpicker-compose/api/colorpicker-compose.api
+++ b/colorpicker-compose/api/colorpicker-compose.api
@@ -43,6 +43,7 @@ public final class com/github/skydoves/colorpicker/compose/ColorPickerController
 	public final fun selectByColor-DxMtmZc (JZ)V
 	public final fun selectByCoordinate (FFZ)V
 	public final fun selectCenter (Z)V
+	public final fun setBrightness (FZ)V
 	public final fun setDebounceDuration (J)V
 	public final fun setEnabled (Z)V
 	public final fun setPaletteContentScale (Lcom/github/skydoves/colorpicker/compose/PaletteContentScale;)V
diff --git a/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ColorPickerController.kt b/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ColorPickerController.kt
index 007d474..1373b58 100644
--- a/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ColorPickerController.kt
+++ b/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ColorPickerController.kt
@@ -24,6 +24,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.Stable
 import androidx.compose.runtime.State
+import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.ui.graphics.Color
@@ -76,10 +78,10 @@ public class ColorPickerController {
   internal var pureSelectedColor: MutableState<Color> = mutableStateOf(Color.Transparent)
 
   /** Alpha value to be applied with the selected color. */
-  internal var alpha: MutableState<Float> = mutableStateOf(1.0f)
+  internal var alpha: MutableState<Float> = mutableFloatStateOf(1.0f)
 
   /** Brightness value to be applied with the selected color. */
-  internal var brightness: MutableState<Float> = mutableStateOf(1.0f)
+  internal var brightness: MutableState<Float> = mutableFloatStateOf(1.0f)
 
   /** Radius to draw default wheel. */
   internal var wheelRadius: Dp = 12.dp
@@ -110,7 +112,7 @@ public class ColorPickerController {
   /** Indicates if the brightness slider has been attached. */
   internal var isAttachedBrightnessSlider: Boolean = false
 
-  internal var reviseTick = mutableStateOf(0)
+  internal var reviseTick = mutableIntStateOf(0)
 
   internal var colorChangedTick = MutableStateFlow<ColorEnvelope?>(null)
 
@@ -133,7 +135,7 @@ public class ColorPickerController {
     paletteBitmap = resized.asImageBitmap()
     copiedBitmap.recycle()
     selectCenter(fromUser = false)
-    reviseTick.value++
+    reviseTick.intValue++
   }
 
   /** Set a [PaletteContentScale] to the palette bitmap. */
@@ -149,25 +151,25 @@ public class ColorPickerController {
   /** Set a radius to draw default wheel. */
   public fun setWheelRadius(radius: Dp) {
     wheelRadius = radius
-    reviseTick.value++
+    reviseTick.intValue++
   }
 
   /** Set a paint to draw default wheel. */
   public fun setWheelPaint(paint: Paint) {
     wheelPaint = paint
-    reviseTick.value++
+    reviseTick.intValue++
   }
 
   /** Set a color for the wheel. */
   public fun setWheelColor(color: Color) {
     wheelPaint.color = color
-    reviseTick.value++
+    reviseTick.intValue++
   }
 
   /** Set an alpha for the wheel. */
   public fun setWheelAlpha(alpha: Float) {
     wheelPaint.alpha = alpha
-    reviseTick.value++
+    reviseTick.intValue++
   }
 
   /** Enable or unable color selection. */
@@ -271,7 +273,7 @@ public class ColorPickerController {
   }
 
   /** Combine the brightness value to the selected pure color. */
-  internal fun setBrightness(brightness: Float, fromUser: Boolean) {
+  public fun setBrightness(brightness: Float, fromUser: Boolean) {
     this.brightness.value = brightness
     val hsv = FloatArray(3)
     android.graphics.Color.colorToHSV(pureSelectedColor.value.toArgb(), hsv)
diff --git a/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/HsvColorPicker.kt b/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/HsvColorPicker.kt
index 44094e5..3a35c23 100644
--- a/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/HsvColorPicker.kt
+++ b/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/HsvColorPicker.kt
@@ -198,6 +198,6 @@ public fun HsvColorPicker(
         }
       }
     }
-    controller.reviseTick.value
+    controller.reviseTick.intValue
   }
 }
diff --git a/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ImageColorPicker.kt b/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ImageColorPicker.kt
index 7373925..3976964 100644
--- a/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ImageColorPicker.kt
+++ b/colorpicker-compose/src/main/kotlin/com/github/skydoves/colorpicker/compose/ImageColorPicker.kt
@@ -181,7 +181,7 @@ public fun ImageColorPicker(
         this.drawOnPosSelected()
       }
     }
-    controller.reviseTick.value
+    controller.reviseTick.intValue
   }
 }