High Quality Content by WIKIPEDIA articles! Rainbow Drops are a brand of sugar-coated cereal type puffed maize and rice confectionery sold in the UK, produced by Swizzels Matlow. The sweets have a orange, pink, green and yellow coloured, sugary coating, and are sold in bags of 80g, 25g or 10g. They are also suitable for vegans. Rainbow Drops have gained cult status and have become widely regarded as retro sweets. 80g bags contain 215 calories