Why do American snack foods use so many artificial colourings?

My local supermarket was selling Takis so I thought I'd give them a try, got the feugo and the blue heat. Both taste fine, neither are as spicy as the packaging would suggest but why the heck do they have to be electric blue and hot red? It adds absolutely nothing to them except an annoying stain on your fingers and tongue (not to mention the red 40 potential side effects šŸ˜€)

Why do American snack foods use so many artificial colourings?
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