Kyralessa wrote: Tue Jul 27, 2021 10:44 am There are mods for that:

https://mods.factorio.com/mod/color-coding

https://mods.factorio.com/mod/Concrete-Tints

https://mods.factorio.com/mod/Dectorio

Thanks, and I know there are mods for that. So perhaps that why they dont put in game?

When I use the map editor, I saw colorful concrete and loader. But these are not in the main game.

I think many players will like the more colorful world.
so, why not devs add these things?