The most immediate bottleneck would be the severely restricted color palette available from natural sources. Artificial dyes deliver a nearly limitless spectrum of bright, stable, and consistent hues (think neon blues, electric greens, and deep purples) that are difficult or impossible to match with plant, fruit, and vegetable extracts. Without them, a factory is suddenly limited to earthy reds (beetroot, paprika), muted yellows (turmeric, beta-carotene), and fragile blues from spirulina, the first natural blue approved for food use in the United States and, since early 2026, cleared for all foods generally. Green has no widely used single natural source of its own, so it is typically blended from a blue and a yellow, and all of these pigments shift under heat, light, or pH changes. This directly constrains product variety: entire flavor-color combinations that consumers expect, such as a bright green apple or a vibrant blue raspberry gummy, become technically unfeasible or visually unappealing.
The downstream effects on flavor variety are equally critical
Natural color and flavor are often intertwined. Many fruit and vegetable extracts used for color carry their own taste (e.g., beet's earthy note, carrot's sweetness, turmeric's bitterness), requiring sophisticated masking. Without artificial flavors to course-correct or cover off-notes, the factory must either reformulate with a narrow set of stable natural flavors or risk off-tasting products. That trade-off plays out at the SKU level: if you can only achieve a reliable red with maltodextrin-coated beet, and that red clashes with a citrus flavor, you lose that SKU. The result is a portfolio stripped down to varieties where clean taste, stable color, and consumer acceptance all align.
Process and shelf-life realities add another layer
Artificial systems are forgiving: a blue gummy keeps its hue through the full shelf life, including warm retail storage. Natural anthocyanins and carotenes degrade with time, temperature, and exposure, leading to fading or browning. To maintain visual identity, the factory must invest in encapsulation technologies, accelerated stability testing, and reformulation cycles, all of which shrink the viable R&D bandwidth for launching new shapes, layers, or multi-color products. At KorNutra, we see that the manufacturers best positioned for such a shift are those who preemptively build a library of approved natural colorants and master the art of microencapsulation, protecting both pigment and flavor until consumption.
The regulatory deadlines are already set
This shift is already scheduled. On January 15, 2025, the FDA revoked the authorization for FD&C Red No. 3 in foods, including dietary supplements, with a reformulation deadline of January 15, 2027. California's Food Safety Act (AB 418) bars red dye 3, brominated vegetable oil, potassium bromate, and propylparaben from food sold in the state starting January 1, 2027, and its School Food Safety Act (AB 2316) removes six synthetic dyes (Red 40, Yellow 5, Yellow 6, Blue 1, Blue 2, and Green 3) from public school meals at the end of December 2027. In April 2025, HHS announced measures to phase out all petroleum-based synthetic dyes from the food supply. For a contract manufacturer, this timeline is concrete: a brand planning a 2027 launch, or shipping anything into California retail, needs its natural-color plan settled now.
Consumer perception remains the final gatekeeper
Even when a stable natural match exists, the color may appear duller or different from what shoppers associate with a flavor profile. Product variety depends on market acceptance as much as technical feasibility. Without artificial inputs, the factory must either educate consumers to embrace the muted, natural-looking aesthetic or accept that some fantasy flavors, such as cotton candy or rainbow punch, cannot exist in their lineup. Until the natural ingredient supply chain evolves to offer more vivid, tasteless, and stable color solutions, product variety will naturally condense around classic fruit flavors that pair cleanly with the available natural palette.