A few weeks ago I saw the very first time these headlight covers. What kind of material is it? Selfmade or anywhere to buy?

I think they are custom made...

The material used for such kind of appliances could be either ABS (acrylonitrile-butadiene-styrene:composite plastics used to make car bodies and cases for computers and other appliances), carbon fiber, or fiber glass.

Later Edit: I will move the topic in the Exterior Tuning forum category.