Firebase Notification icon is gray

Although I did this solution which is in stackoverflow, the icon still the same.

<meta-data   android:name="com.google.firebase.messaging.default_notification_icon"android:resource="@mipmap/ic_launcher" />

here top icon:

and when I slide top bar, I see this:

Where is the problem?I also use this website for creating transparent icon: https://jgilfelt.github.io/AndroidAssetStudio/icons-notification.html#source.space.trim=1&source.space.pad=0&name=ic_stat_ic_launcher

Also my res file like this right now (drawable folders from above link):

icon here: