I must admit I've never seen a Fern Green ti sport over here, but TBH green is classed as a unlucky colour for cars in the U.K. for some reason
but we do have our rare colours too like this one
Dakar Yellow ti sports they only seem make them in this colour at the end of the build run of E36's b4 it changed to E46 model compacts
also some of the year 1999 ti sports had a limited edition colours
like this one a red/gold metalic colour which I dont know the name off
and this one which is my own 318ti sport
which is a blue/green metalic (what looks more blue TBH) called aegaeischblau metalic