Blue is cool and calming... Shirdi Baba wore a ring at the time of his death. The colour of the stone in the ring was blue... the colour of the infinite and boundless - and in the stone was engraved the symbol of Om, the inner reality of that which is fathomless. (Photo of Shirdi Baba ring is on page 264 of Spirit and the Mind). (S&M, p. 130)