Mystikal is correct
Ellipsoids were designed for halogens, i e there is some amount of light that is leaking past the cutoff edge (that somewhat gets into other drivers' eyes) - it is tolerable for halogens but unacceptable for stronger and higher K HID light output. OEM projectors OTOH were designed for HID strength and do much better job in cutting the light
Also as i said already, one doesn't have to go to lower output 5k+ color hids to get blue tint. With real projectors, one gets the bluish edge due to dispersion of light.
Hopefully i will once finish my retro and will show off the result