diff --git a/buildSrc/src/main/kotlin/Configs.kt b/buildSrc/src/main/kotlin/Configs.kt
index db6a3806..85dd00db 100644
--- a/buildSrc/src/main/kotlin/Configs.kt
+++ b/buildSrc/src/main/kotlin/Configs.kt
@@ -1,6 +1,6 @@
 object Configs {
-    const val COMPILE_SDK_VERSION = 34
-    const val TARGET_SDK_VERSION = 34
+    const val COMPILE_SDK_VERSION = 35
+    const val TARGET_SDK_VERSION = 35
     const val MIN_SDK_VERSION = 26
     const val CORE_APP_ID = "com.metacto.coreApp"
     const val SAMPLE_APP_FRAMEWORK_NAME = "sampleAppShared"
diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index 9737d772..0123f1f7 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -16,7 +16,7 @@ object Versions {
     const val VOYAGER = "1.1.0-beta02"
     const val ACTIVITY_COMPOSE = "1.8.0"
     const val APP_COMPAT = "1.6.1"
-    const val CORE_KTS = "1.12.0"
+    const val CORE_KTS = "1.15.0"
     const val SECURITY_CRYPTO = "1.0.0"
     const val PLAY_SERVICES_AUTH = "20.7.0"
     const val SPLASH_SCREEN = "1.1.0-alpha02"
diff --git a/coreapp/src/androidMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt b/coreapp/src/androidMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
index ac64a5fb..6aa20127 100644
--- a/coreapp/src/androidMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
+++ b/coreapp/src/androidMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
@@ -30,6 +30,7 @@ actual fun AudioPlayer(
     handleLifecyclePause: Boolean,
     playIconRes: DrawableResource,
     pauseIconRes: DrawableResource,
+    backgroundColor: Color,
     playIconColor: Color,
     playIconSize: Dp,
     durationTextColor: Color,
@@ -112,6 +113,7 @@ actual fun AudioPlayer(
         horizontalPadding = horizontalPadding,
         progressSpacing = progressSpacing,
         topPadding = topPadding,
+        backgroundColor = backgroundColor,
         onPlayClick = playerManager::togglePlay,
         modifier = modifier
     )
diff --git a/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt b/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
index ca8651fc..24fab860 100644
--- a/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
+++ b/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
@@ -29,6 +29,7 @@ expect fun AudioPlayer(
     handleLifecyclePause: Boolean = false,
     playIconRes: DrawableResource = Res.drawable.ic_audio_play,
     pauseIconRes: DrawableResource = Res.drawable.ic_audio_pause,
+    backgroundColor: Color = colors.audioPlayer.backgroundColor,
     playIconColor: Color = colors.audioPlayer.playIcon,
     playIconSize: Dp = spacings.audioPlayer.playIconSize,
     durationTextColor: Color = colors.audioPlayer.durationText,
diff --git a/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayerComponent.kt b/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayerComponent.kt
index 4242370b..acd1a836 100644
--- a/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayerComponent.kt
+++ b/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayerComponent.kt
@@ -30,7 +30,6 @@ import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.unit.Dp
 import com.metacto.core.presentation.components.images.AppImage
 import com.metacto.core.presentation.components.texts.SingleLineText
-import com.metacto.core.presentation.theme.CoreTheme.colors
 import com.metacto.core.utils.extensions.noRippleClickable
 import org.jetbrains.compose.resources.DrawableResource
 import org.jetbrains.compose.resources.painterResource
@@ -60,6 +59,7 @@ fun AudioPlayerComponent(
     topPadding: Dp,
     horizontalPadding: Dp,
     horizontalArrangement: Dp,
+    backgroundColor: Color,
     onPlayClick: () -> Unit
 ) {
     // prepare vars
@@ -89,7 +89,7 @@ fun AudioPlayerComponent(
         verticalArrangement = Arrangement.spacedBy(progressSpacing),
         modifier = modifier
             .fillMaxWidth()
-            .background(color = colors.white)
+            .background(color = backgroundColor)
             .padding(top = topPadding)
     ) {
         // Main content row
diff --git a/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/theme/CoreColors.kt b/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/theme/CoreColors.kt
index db9eb20a..1a2a8ba5 100644
--- a/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/theme/CoreColors.kt
+++ b/coreapp/src/commonMain/kotlin/com/metacto/core/presentation/theme/CoreColors.kt
@@ -451,7 +451,8 @@ data class CoreColors(
     // AudioPlayer
     val audioPlayer: AudioPlayerColors = AudioPlayerColors(
         primary = primary,
-        black = black
+        black = black,
+        white = white
     )
 )
 
@@ -1012,12 +1013,14 @@ data class LoadingMoreColors(
 data class AudioPlayerColors(
     private val primary: Color,
     private val black: Color,
+    private val white: Color,
     val playIcon: Color = primary,
     val durationText: Color = primary,
     val progress: List<Color> = listOf(primary, primary),
     val tracker: Color = primary.copy(alpha = 0.5f),
     val titleColor: Color = primary,
-    val thumbnailShadowColor: Color = black
+    val thumbnailShadowColor: Color = black,
+    val backgroundColor: Color = white
 )
 
 val LocalCoreColors = staticCompositionLocalOf { CoreColors() }
\ No newline at end of file
diff --git a/coreapp/src/iosMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt b/coreapp/src/iosMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
index e109c994..3ae27afd 100644
--- a/coreapp/src/iosMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
+++ b/coreapp/src/iosMain/kotlin/com/metacto/core/presentation/components/audioPlayer/AudioPlayer.kt
@@ -43,6 +43,7 @@ actual fun AudioPlayer(
     handleLifecyclePause: Boolean,
     playIconRes: DrawableResource,
     pauseIconRes: DrawableResource,
+    backgroundColor: Color,
     playIconColor: Color,
     playIconSize: Dp,
     durationTextColor: Color,
@@ -166,6 +167,7 @@ actual fun AudioPlayer(
         horizontalPadding = horizontalPadding,
         progressSpacing = progressSpacing,
         topPadding = topPadding,
+        backgroundColor = backgroundColor,
         onPlayClick = {
             if (isPlaying) {
                 player.pause()