More themes cleanup (#5410)

* More themes cleanup

* Tweak some things

* Fix 'Clear History' icon

* Split out ripple colored to its own drawable

* Tidy up things

* Unify background dim amount

* Use primaryColor for Account login button

* More colored ripples

* use colorOnPrimary for selected comfortable library item title

Co-authored-by: Soitora <simon.mattila@protonmail.com>

app/src/main/res/layout/main_activity_fab.xml

@@ -2,7 +2,11 @@
 <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/root_fab"
-    style="@style/Theme.Widget.FAB"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_margin="16dp"
+    android:layout_gravity="bottom|end"
+    android:minWidth="0dp"
     android:visibility="gone"
     tools:icon="@drawable/ic_add_24dp"
     tools:text="Action"