The headlight reflectors are plastic, therefore cannot be chromed.
The process for plastic is metalising. this puts a high quality silver reflective mirror coating on plastic (Gold, copper, brass and bronze finishes are also available, obviously not suitable for head lights)
I had the reflectors remetalised, by a company that manufactures coffin hardware.
The OEM reflectors were done on the cheap, a vital stablising process was omitted and as such heat from the bulbs would cause the reflectors metalised coating to deteriorate and dull. Even the poxy 5w parking light bulb can generate enough heat to cause this.
You can often see a scorch mark on the reflector above the parking light.
Once done properly they should be right for many years.
As for the cost, I forget, but at a guess I think it cost @ A$60 to 70 for for a set of 4 reflectors (2x low and 2x high beam reflectors) I didn't bother with the bits that surround the reflectors as I painted them black. I prefer the look, never liked the original look, always seemed cheap and nassty to me, like some hideous Jap crap Lexus or some such.
Looks much classier and more masculine in black, always thought the lights looked too feminine and wussy in silver......a bit Hello Kitty!
Yes I know a Lexus is much more expensive than a MG, but cost doesn't always equate to class or good taste!
This reminds me...... I must update my avatar pic.
"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"