Welcome to OSM and thanks for your contribution!

The roof:colour=אדום is not quite correct as for such values we always use English only. See more examples here: https://wiki.openstreetmap.org/wiki/Key:roof:colour

In general you can find all the information in our wikipedia

I invite you to read Israel dedicated page, it contains all the agreed conventions. https://wiki.openstreetmap.org/wiki/Israel