What’s the food colouring for? Aren’t balloons generally colourful? Even if it does make a difference how do they, or anyone, know how much of the colour is provided natively or additively? It’s such a weird back-story. Did they try it before without food colouring? Or aren’t these actually balloons at all but some colourless inflatable … oh wait now, I’m not sure where I’m going with this.
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