RadioLab audio piece on gene therapy

Listen to the RadioLab audio piece on gene therapy and read the secondary article on tetrachromacy. Based on the content of the Radiolab piece, what evidence is there that it might be possible to cure color blindness in humans in the future? Why might most tetrachromats only have a similar ability to distinguish color as trichromats? Is it feasible that we might be able to 'enhance' our color vision in the future?