Contact lenses for the colour blind

From Phys.Org:

Gold nanocomposites are nontoxic and have been used for centuries to produce “cranberry glass” because of the way they scatter light. So, Ahmed Salih, Haider Butt and colleagues wanted to see whether incorporating gold nanoparticles into contact lens material instead of dye could improve red-green contrast safely and effectively.

I’m not sure my own colour blindess (red/green, green/brown, blue/purple) is sufficiently debilitating to warrant the discomfort of contact lenses, but this sounds remarkable. Hopefully an improvement on colour blind corrective glasses, star of many a viral video, that simply turn the world into a bad photoshop.