Use extracted color for scrim in overview mode.

import android.graphics.Color;

import android.graphics.Rect;

import android.graphics.Region;

import android.support.v4.graphics.ColorUtils;

import android.util.AttributeSet;

import android.view.KeyEvent;

import android.view.LayoutInflater;

import com.android.launcher3.Utilities;

import com.android.launcher3.allapps.AllAppsTransitionController;

import com.android.launcher3.config.FeatureFlags;

import com.android.launcher3.dynamicui.WallpaperColorInfo;

import com.android.launcher3.folder.Folder;

import com.android.launcher3.folder.FolderIcon;

import com.android.launcher3.keyboard.ViewGroupFocusHelper;

    public static final int ANIMATION_END_DISAPPEAR = 0;

    public static final int ANIMATION_END_REMAIN_VISIBLE = 2;

    // Scrim color without any alpha component.

    private static final int SCRIM_COLOR = Color.BLACK & 0x00FFFFFF;

    private final int[] mTmpXY = new int[2];

    @Thunk DragController mDragController;

    // Related to adjacent page hints

    private final Rect mScrollChildPosition = new Rect();

    private final ViewGroupFocusHelper mFocusIndicatorHelper;

    private final WallpaperColorInfo mWallpaperColorInfo;

    // Related to pinch-to-go-to-overview gesture.

    private PinchToOverviewListener mPinchListener = null;

        mIsRtl = Utilities.isRtl(getResources());

        mFocusIndicatorHelper = new ViewGroupFocusHelper(this);

        mWallpaperColorInfo = WallpaperColorInfo.getInstance(getContext());

    }

    public void setup(Launcher launcher, DragController dragController,

                getDescendantRectRelativeToSelf(currCellLayout, mHighlightRect);

                canvas.clipRect(mHighlightRect, Region.Op.DIFFERENCE);

            }

            canvas.drawColor((alpha << 24) | SCRIM_COLOR);

            // for super light wallpaper it needs to be darken for contrast to workspace

            // for dark wallpapers the text is white so darkening works as well

            int color = ColorUtils.compositeColors(0x66000000, mWallpaperColorInfo.getMainColor());

            canvas.drawColor(ColorUtils.setAlphaComponent(color, alpha));

            canvas.restore();

        }