Jell-O — long known for its bright rainbow of artificially colored gelatins — is getting a line of products made without synthetic colors or artificial sweeteners to meet increasing consumer demand for natural ingredients. Kraft Heinz Co. on Tuesday unveiled Jell-O Simply, a line of pre-made gelatin that the company said is made with fruit juice and has at least 25% less sugar than the regular version. Kathryn O’Brien, Kraft Heinz’s head of marketing for desserts, said the products are colored using vegetable juice, fruit juice and an extract derived from turmeric roots.