Need help with a part on the Leopard.

Yes, the cross part should be painted white. It's a German device used to aid in blackout (nighttime) driving. The driver to the rear orients on it when driving.

Thanks man:)

Horus,
the "shield" is light gray, the cross is white and the ligth housing (the raised part) is flat aluminium. This device is meant to give you the right distance from the vehichle in front of you during the night transfers. As soon as you can properly "focus" it you've reached the right distance.
Ciao