Visiting the famous cemetery in Zfat (Safed) / northern Israel is always a very special event. I was walking around at the cemetery for more than two hours today and took quite a few pictures and filmed a couple of videos.
The first video of the short "Cemetery Series" shows the Kever of Rabbi Yosef Karo (Kabbalist and author of the "Shulchan Aruch").
Not every grave in the cemetery is painted blue; however, the colour BLUE has special meanings in Judaism as well as in Islam. I once heard that Muslims paint parts of their homes blue because they want to keep away anything evil. In Judaism, the colour BLUE stands for the Glory of G - d but, in addition to that, evil should also remain far away.