TL;DR
Add "get_contents()" to class LuaFluidBoxWhat ?
http://lua-api.factorio.com/latest/LuaFluidBox.htmlWhy ?
Color Fluid Trains withhttps://mods.factorio.com/mod/Train_Ore_Color-016
I can´t program so that would be an easy way for me to add them into the mod
Greetings
Jojo