This is a small adjustment for Your Map. Nothing against the US flag, but one feels one's own flag but equally comfortable.
You have to change anything except the two DDS files in the same directory
your SampleModMap, so pack your own card.
>>> And never !!! !!! the map below
c: \ Program Files (x86) \ Farming Simulator 2017 \ data \ maps \ textures \ gold crest valley \ <<<
The two DDS files can of course also be provided with other flags, who prefer
want to have a Swiss or ... or it can do so.