Gazz,
There was an FC produced in yellow and black - I have no photos of one, but Trax produced a model of this vehicle just last year. There is no picture of that specific vehicle on their website (
http://www.topgear.com.au), but you can see it on the cover of their book which they advertise there (6th row, 4th column).
There are none in our club, but there is/was a member of the FE-FC Holden Car Club of Victoria who had a station sedan in this colour combination at the FE-FC Nationals a couple of years ago, with a matching caravan. Very cool....
I think the colour combination is called Cape Ivory and Black, but I stand to be corrected on that. If the yellow colour is indeed called that, then there is a GMH Paint Code (352) for that one colour all over. However, I have never seen an all-yellow FC.
Hope that helps RET