> Instead of mining oil or boiling vats of chemicals, Colorifix uses engineered microorganisms, (essentially programmable microbes) to grow colours in the lab.

Biotech is cool, but the title is wrong. "colour without chemicals" refers to "we don't need chemicals", e. g. industrial scale-level chemicals. But you actually do, you just use different chemicals; in particular all energy given to the bacteria, all materials needed to have them grow in the lab or in a bioreactor. All these media are also defined and need to be constantly monitored.

This is in general more efficient than in organic chemistry, but to insinuate "we need 0% chemicals" - sorry, that's also not the case. Also, the term "growing colour" is just wrong from a scientific point of view. You may have organisms grow, and they may produce some pigments in some substance - but that is not "growing colour". This is just a catchy title to make people be more interested in the topic. I think the topic is interesting without a need for catchy titles.