Hi Bill, The headlight masks are all black now. They do not block any light output as they are above the lense on the top area that extends up and out. I also incude a small strip for the bottom portion that you may or maynot choose to use. This would bloack a small amount of light. I have it on mine and have not noticed any difference from before without it.
Let me know if you have any other questions or would like to try a pair.
Thanks again! Devin