I don’t know a lot about food dye side effects. Skittles and M&Ms have a lot of dyes, as well as many processed foods. My daughter has researched this because she has a toddler. She avoids dyes mainly because it affects behavior. Many “healthy” brand snacks use plants for dye. Yuka app gives ratings on food safety. It’s free but you can get paid version.
FOOD DYES & THE CONSEQUENCES
https://happilyunprocessed.com/food-additives/food-dyes-and-the-consequences/
https://www.cspinet.org/page/chemical-cuisine-food-additive-safety-ratings
https://www.special-education-degree.net/food-dyes/
https://www.cspinet.org/sites/default/files/attachment/Dyes_Fact_sheet_School_Foods_3.8.2021.pdf
FOOD DYES & THE CONSEQUENCES
https://happilyunprocessed.com/food-additives/food-dyes-and-the-consequences/
https://www.cspinet.org/page/chemical-cuisine-food-additive-safety-ratings