add button tinting

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

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

@@ -296,12 +296,15 @@ public class FileDisplayActivity extends FileActivity
             MainApp.setStoragePath(newStorage);
 
             try {
-                new AlertDialog.Builder(this, R.style.Theme_ownCloud_Dialog)
+                AlertDialog alertDialog = new AlertDialog.Builder(this, R.style.Theme_ownCloud_Dialog)
                     .setTitle(R.string.wrong_storage_path)
                     .setMessage(R.string.wrong_storage_path_desc)
                     .setNegativeButton(R.string.dialog_close, (dialog, which) -> dialog.dismiss())
                     .setIcon(R.drawable.ic_settings)
-                    .show();
+                    .create();
+
+                alertDialog.show();
+                alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(ThemeUtils.primaryAccentColor(this));
             } catch (WindowManager.BadTokenException e) {
                 Log_OC.e(TAG, "Error showing wrong storage info, so skipping it: " + e.getMessage());
             }