EnChroma, Inc. worked for ten years to develop lenses that enable colorblind people to distinguish more colors than they ever have before. Those glasses went on the market a couple of years ago, and are available to the public for $350-$400. Of course, affected people have varying levels of colorblindness and the enhancement from the glasses varies among them.
As part of their Color for All campaign, Valspar Paint invited a few colorblind people to try the glasses out and got their reactions to seeing vivid colors for the first time. It was quite emotional for them, and yes, they got to keep the glasses. Valspar also offered them to some commenters at YouTube who shared their stories. -via Viral Viral Videos