Colors of Seasonal Dirt

What colors (actual names of enamels welcome, e.g. “Model Master burnt umber”) would you use for dirt on a tank operating offroad in the following scenarios:

-Central Europe summer and spring, weather dry, ground conditions dry
-Central Europe fall, weather rain, ground conditions muddy
-Central Europe winter, weather snow, ground conditions dry and cold

i’ve fiund that flat military brown works for dirt, atlest for me. depending on how dark/light you want it, it shouldn’t be a prob