Having a blue front door is soothing because blue is often associated with the sky and crisp refreshing water. If you want your home’s curb appeal to suggest a feeling of abundance and prosperity, a blue front door is a good choice for your home.
He loves blue! Blue Doors in City of Safed (Tzfat). Blue symbolizes Heaven, according to the Kabbalah.Tradition says that Safed was founded as long ago as the time of Noah, by one of Noah's grandsons Shem.