Hi Arild,
<p style=”text-align: left;”>The deck is referred to as ‘grey’, with reference BS18C31.</p>
The hull appears to be the same colour as the internal mouldings for the heads. I sent in a small sample from my head (which I am remodeling) to have the colour identified. Fibreglass Supplies Ltd (FSL) in Plymouth gave it the code “C33772 (Jon Cannon) “. This is a good match for the hull and interior mouldings.