Launcher3: Transparency recents overview

Change-Id: Ie97f80f0a67a18ec0741e8656adacf9291a2f9ea
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
index 396d0ab..0b136ac 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java
@@ -22,6 +22,8 @@
 import android.graphics.Rect;
 import android.os.SystemProperties;
 
+import androidx.core.graphics.ColorUtils;
+
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
@@ -142,7 +144,8 @@
 
     @Override
     public int getWorkspaceScrimColor(Launcher launcher) {
-        return Themes.getAttrColor(launcher, R.attr.overviewScrimColor);
+        return ColorUtils.setAlphaComponent(
+                Themes.getAttrColor(launcher, R.attr.overviewScrimColor), 100);
     }
 
     @Override