Hello John,
I'm sorry but in my previous post, I made a big mistake.
Reading the Paul Leaman's book again, the F.I's profile shown is not F.I 102/17 but Voss's 103/17. My apologies if I induce you in error.
But as I said previously, finish on both aircraft are roughly the same : streaked olive brown on a base coat of pale blue. My better approximation of this blue is an equal part mix of RLM 65 and RLM 76. Cowling is plain olive brown and rudder plain white.
To make the streaking, usually I proceed in this way : I airbrush a decal sheet with mixed blue. After drying, I use a Prismacolor watercolour pencil to draw the streaking on the decal. Next, I airbrush a coat of varnish or liquid decal film on the drawing to seal it. After complete drying, you can cut each panel and put it on the model.
Hope this is help.
Best regards from Belgium
Philippe