After playing around with Designs, my Icon’s where messed up.
Even a reinstall of an app did not help. After searching on the internet, I found a working solution. Remove app_icons.db app_icons.db-journal with:

cd  /data/data/com.google.android.googlequicksearchbox/databases
rm app_icons.db app_icons.db-journal

Then force stop google app, that forces the repaint of the icons, don’t know if it’s the right way to do it but it works.