B. N. Mehra and Co. Supplies Daylight Fluorescent Pigments. B. N. Mehra and Co. Offers a variety of acrylic dyes, metal complex dyes, special effect colorants, high performance colorants and additives. The Daylight Fluorescent Pigments are used in textile printing, paper coating, printing inks, paints, plastics, vinyl plastisol and organosol, rubber, stationery goods, etc.