Mars is a Red Coloured planet . It is responsible for agressivenes, strength, zeal, energy and valour . It enhances fire of passion. When mass is poisited in lagan , 2nd , 4th , 7th , 8th or 12th house of a personis horoscope then Mangal Dosha forms. It is considered at the time of marriage. It is suggested to marry with manglik girl/boy. There are some manglite concelletion yog of concellation that should also be considered.