They found that the colors could be removed during the depolymerization process, making the plastics recyclable and more sustainable.

It sounds like an interesting study, but would it affect anything? If something, it further enables plastic production (after a minor PR stunt on making some bottles colorless), while most of it ends up in the landfills after exactly one use mixed with everything else. Production of excessive products is unsustainable, recycling comes after we couldn’t escape it.