Fixes #6675 correct call order when tinting the dialog button

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/owncloud/android/ui/activity/SettingsActivity.java

@@ -863,8 +863,8 @@ public class SettingsActivity extends ThemedPreferenceActivity
                         .setPositiveButton(R.string.common_ok, (dialog, which) -> dialog.dismiss())
                         .create();
 
-                    alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(accentColor);
                     alertDialog.show();
+                    alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(accentColor);
                 }
             }
         }