RAL or paint code for Pirelli Ps

I've more or less finished my lengthy Campaign restoration and getting it ready for mot 

I'm not happy with wheels as I had these refurbed some time ago, but don't look right - they're too silvery.

Whilst not urgent, I'd like them sorting sometime in correct shade.

I've the centre caps in same shade, although I've yet to "black" the P's which I've put off pending repaint. Just wondered if there was a RAL or paint code for the correct shade.

Many thanks in advance