I recently had to replace my ancient Sony alarm clock. I found one that used an LCD with a backlight that wasn't blue. And of course, it was still too bright.

I recently had to replace my ancient Sony alarm clock. I found one that used an LCD with a backlight that wasn't blue. And of course, it was still too bright. So I put some window tint on it. I picked up some samples with different transmissivity from the local shop that did my car, and mixed & matched until I got what I wanted, then applied them.