Like what MK mentioned, change it back to the original and take it to court. But if it mean you'll have to skip work then it's not worth it. Book a court date anyway and see, if you're working, then just do the guilty plea with an explanation and least get it reduced.
Yes BMW sells the clear lights, but you're suppose to put the amber bulbs in them. And to get rid of the "egg yolk" look, get silvervisions or DIY ones.
We can't help it but, cops these days are looking for even such small things as illegal bulbs.