The key part is that it has different refraction for specific wavelengths. This implies that you will still need filters to restrict the light to those waveleng

The key part is that it has different refraction for specific wavelengths. This implies that you will still need filters to restrict the light to those wavelengths or you will still have chromatic aberration. Projecting light through such a lens wouldn't have quite the same problem as the source light could already be tuned. In short, good for projection, but maybe still bad for capture.