Use warning color for POP3 accounts

app/src/main/java/eu/faircode/email/AdapterAccount.java

@@ -74,6 +74,7 @@ public class AdapterAccount extends RecyclerView.Adapter<AdapterAccount.ViewHold
     private LifecycleOwner owner;
     private LayoutInflater inflater;
 
+    private int colorWarning;
     private int colorUnread;
     private int textColorSecondary;
     private boolean debug;
@@ -165,9 +166,11 @@ public class AdapterAccount extends RecyclerView.Adapter<AdapterAccount.ViewHold
             ivPrimary.setVisibility(account.primary ? View.VISIBLE : View.GONE);
             ivNotify.setVisibility(account.notify ? View.VISIBLE : View.GONE);
 
-            if (settings)
+            if (settings) {
                 tvName.setText(account.name);
-            else {
+                tvName.setTextColor(account.protocol == EntityAccount.TYPE_IMAP
+                        ? textColorSecondary : colorWarning);
+            } else {
                 if (account.unseen > 0)
                     tvName.setText(context.getString(R.string.title_name_count, account.name, NF.format(account.unseen)));
                 else
@@ -499,6 +502,7 @@ public class AdapterAccount extends RecyclerView.Adapter<AdapterAccount.ViewHold
 
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean highlight_unread = prefs.getBoolean("highlight_unread", true);
+        this.colorWarning = Helper.resolveColor(context, R.attr.colorWarning);
         int colorHighlight = prefs.getInt("highlight_color", Helper.resolveColor(context, R.attr.colorUnreadHighlight));
         this.colorUnread = (highlight_unread ? colorHighlight : Helper.resolveColor(context, R.attr.colorUnread));
         this.textColorSecondary = Helper.resolveColor(context, android.R.attr.textColorSecondary);