Here is a comparison of the SLA prototype hollow orange buttons against Brian's filled green buttons, both with brightness set at 5 powered by AC. Though this is an impractical perspective, it kind of shows how the light is trapped in the filled buttons.

I just hope that the final production material has similar properties to the SLA, or all this comparison could be for nothing. I will be speaking to my molding company (did I mention that I finally chose a molding company after 3 months of searching?) this week about this situation and more.