Hi John13,
As David suggests the colour options were / are largely on RP6 turntables and it is true we have discontinued many of the options.
This is due to substantial minimum order quantities on plinths and slow sell through of some finishes. It is the very same minimum order quantities that preclude us doing one off customised finishes.
Having studied our stock situation I can confirm at this point in time we have one yellow RP6 in UK stock, so if you wanted that (it will be the very last available) then you could order through your Rega franchised dealer.
Hope this helps, and I hope I have not contavened any forum rules,
Best regards,
Paul Darwin
Rega Research