The KSA builds with a lot of red brick. Wonder what they use (used) to color theirs?
Along the Golf Sea in the AlQatif area a Prince filled in the Sea to build huge homes, many using beautiful red blocks. The peiple who had seaside homes no longer do.
That is how people in a Theocratic Monarchy live. They are subject to the whims of the monarchy.
https://www.redbricks.com.sa/en/