Whether it is red or green chillies, both have their own individual health benefits. Green chillies are known to help in managing blood sugar levels, good for the skin and heart and red chillies are helpful in iron absorption, relieve congestion, burn fat etc. Chillies are also a good source of Vit C, Vit A, B1, B2, beta carotene, protein, calcium and phosphorus. There have been many cases of inferior quality and discoloured chillies being mixed with Rhodamine B and Red Oxide to improve the colouring. Such “coloured” chillies are actually exported to other countries for using as husk in furnaces and clearly marked as being unfit for human consumption. But within India, the same artificially coloured chillies are ground and sold as inexpensive, edible chilli powder . Other additives used are brick powder, talc, starch, water soluble coal tar, sandstone etc. I bought a packet of chilli powder to do a simple water test to check for adulteration.