The German land troops (Wermacht and Waffen SS) "piped the collars of their uniform with the color of their particular branch (eg Armor (Panzers) - Pink, Artillery - Red, Infantry - white). As far as the actual color of the pink, I don't remember ever having seen anyone reference an FS number for it. The last time I used the pink, I used the pink that MM has in its section for uniforms and figures. You might get some better (or more) answers if you were to post this thread in the Figures section of the forum.