DEDR entry 3680

    Tamil
        niṟa (-pp-, -tt-) to take on colour as fruits or leaves, deepen in colour, be distinguished, brilliant, be bright and fresh in appearance
        niṟam colour, complexion, dye, tincture, quality, property, temper, nature, light, lustre, fame, reputation
    Malayalam
        niṟam colour, light, splendour
        niṟakka to shine
    Kota
        nerm (obl.nert-) colour. DED 3047