Times have taken the soil texture from Farmexpert 2017 and reingepackt in ls15. Lo and behold, looks very nice.
The existing ground_diffuse.png ZBS rename. in ground_diffuse1.png. Or override as you want.
Plügen is see only with 8 or 9 Km / h möglich.Teilweise well you will.
Ps: Unfortunately I do not know how to change the colors.