RAL number Mulliner wheels

[Fiammetta]

Hi guys ,
Does anybody know the colour of the paint on the inner hub cap bit of the Mulliner 19 inch wheels ?
One of the hubs is bubbling bit .
Needs a good rub down ,prep and paint ,but which colour ?

[Fiammetta]

Bump
Guess no ones actually got there hands dirty ?
Any ideas the hub paint colour ?