Izzi is correct.
From The Detachment Leaders Survival Guide....
Editing and Setting up the CRL
The Costume Reference Library is an important step for new recruits as well as seasoned troopers. This point of reference should be found on the 501st Legion pages. Also it should be contained in the larger more detailed view on each Detachment Forum, available for public inspection.
This is all that is listed.
And this is from the CRL page on the Legion boards. http://www.501st.com...k/Costuming:CRL
Each reference guide contains pictures of the costume, a detailed description of the parts, and requirements for 501st membership. Below you will find a list of detachments and the costumes they manage. To find out more about building the costume, click on the detachment's visual guides link. Please be aware that this project is constantly growing and evolving. Check back often to see the latest entries!
Ultimately we report to the LMO's. If they say we have to make a change to our CRL's, then that change is getting made.
It is our fault for not catching this. Apparently is was wrong on the GML's CRL's also, which were written long ago. There is no issue with using the silver lenses at any non-canon event. They just need to be smoke/black for canon level events and approval.
In my personal opinion, I like the way it looks. But my opinion can't over-ride a lack of reference. Hope you understand.