M&M's adopt natural dyes, dropping blue and brown from the lineup
M&M's will switch to natural dyes and remove blue and brown from their color lineup due to cost and production issues with spirulina-based blue dye; other colors will be dyed with natural sources like beets and turmeric, with an August rollout on Amazon for the new lineup (excluding blue and brown). Mars aims to reintroduce a natural blue and brown by 2028 after upgrading production lines; artificial-color versions will remain on shelves for now, reflecting a broader trend of dye changes across snacks.