Hey all, quick "color blocking" idea!

So, I plan on making a fully functioning ncr ranger helmet with lights in the eyes. I can think of a few ways to do that. My idea is to have 2 sheets of plastic, 1 reflective later, and 1 of the sheets of plastic would need to block out blue.

So theoretically:
||->o|| ||
Sheet1 to light source, just before reflective layer, then after that a filter for just that light color. I noticed with my eagle pair it blocks almost all red leds, and most red lasers below a certain power output.

I wish I could give you guys more information but at work atm. Got any idea fellow geeks? I was thinking fiber optics....