It is just speculation on my part, but it seems that red tile roofs are a status symbol in Israel.
This was my first time to see such a roof in its "becoming" stage.
The clay tiles were in neat little stacks, just waiting for Shabbat to be over so the roofer could start to lay them.
A whole new neighborhood is being built in my town in the Negev.
You can see here that the street and houses are still under construction. (With two clicks you can open the photos to full size and see better what I men.)
(My neighborhood is up behind those trees on the hill; it was the first part of Meitar to be built, in 1984.)
Almost all the new houses have flat roofs, except for these two here in the photo with the sloping roofs.
The red one sticks out like a . . . like a status symbol. ;-)
UPDATE: Just found this article in Haaretz:
"The rise and fall of the red roof: Israel's white picket fence."