Jango Fett Helmet Color RAL

Hey Guys.
Im working on my Jango Fett helmet and Im still looking for the right Colors. As I have Access to a
professional Car Painting Chamber I can use the RAL Color System. So maybe you can help me out by pointing
me in the right direction which color may matches best. Here´s a link with the RAL Colors. Just check from RAL 5000
downwards.
RAL Farben | RAL CLASSIC Farben

Thanks for any hints and help.
Regards Lars

I'd prefer Tamiya XF08 for the darker and Tamiya XF08 with a drop of Tamiya White for the brighter areas for RAL colors don't match exactly imho.