Thanks for the info.
My main dash (clocks) is green (Impreza) and my Empeg and Pioneer head unit (replacing a double height original fit unit) was green to match but when the Pioneer died all I could get were blue units hence as long as I can any blue for the Empeg it will be an improvement.
Any thoughts on where to source replacement PATA cables (I have 2x 250gig drives installed)?