Personally I don't think it looks quite right.
I think the black of the grill, mixed with the grey center splitter, silver mirrors etc looks a bit odd.
Now, if the black optics kit made the other element back too, it may work better.
You may ahve seen a thread kicking round titles "Oh no" that shows my car with photoshopped anthracite wheels on it. If you could colour match the grill, mirrors and alloys I think it would look smart!
J