I would really like a setting to disable the tiling of patterns under the roboports.

The behavior seems to be... misbehaving in my current game. I had lots of roboports when I added Concreep to the save. Some of the roboports were on colored refined concrete. As soon as I saw that my robots were laying colors down, I went through my base and made sure that ONLY clean, regular refined concrete is under the roboports. But Concreep is still placing colored ghost tiles down.

I just want to disable it, or get some clarity on how to reset the tile pattern used by Concreep.

Thanks in advance!

The tile pattern is set on roboport building. So you have to pick up and replace the roboport to set the new pattern.