This is not my build or my rims but this thread shows the FIR on ORANGE - the FIR rims were always a rare rim at the time, and Orange spec'd them for a couple of years 94-97 on C16Rs and P7s in particular - here's the link to the other build:
https://www.retrobike.co.uk/threads/my-daughters-1995-orange-c16r.425626/
https://www.retrobike.co.uk/threads/my-daughters-1995-orange-c16r.425626/