Hello Golden Mean
You might like to give Vinny Byrne, 13, Synott Place, Dorset Street a call. I believe he can mix any paint colour you need. I seem to remember being given his name some time ago when I was looking to get a non-standard paint colour. Phone 8306695. I see that there is a Vinny Byrne Ltd at Westlink Industrial Estate. Don't know if these are one and the same person.