The new Rs 500 banknotes, which will be issued by banks from today, have extra security features besides having peculiar colour, theme and size which differentiate the new bills from the earlier series.The Rs 2,000 notes, which are being introduced for the first time, will be of magenta colour with Mangalayan imprinted on the reverse side. The higher value currency notes will have other designs, geometric patterns aligning with the overall colour scheme both on the obverse and reverse.