Orthodox Catholic Church Domes

Orthodox churches are known to take up mystical significance; the most common shape in this is an oblong or rectangular shape which imitates the shape of a boat.
In a church, one can find one or more cupolas (towers with pointed roofs.) The number of cupolas on each tower is said to have its own meaning and symbol. In a typical Russian church, the onion-shaped domes are pretty common to find. Each cupola is eventually crowned with a cross which is the instrument for salvation.
When it comes to the colour of the domes, red is considered as a reminder for the passion and suffering of Jesus, gold signifies the light of god, green is the colour of the Holy Spirit, blue is associated with the “God bearer” or Mother Mary and white is used to denote righteousness, purity, and holiness.