Thinking about colored glasses reminds me of an article which mentions/claims that flourescent light is partly blue light which is part of an ignition that causes a phosphor layer to glow to finally get a broad spectrum of colors. The article says because of the afterglow, the parts of the spectrum that are not blue flicker much less - because they come from the afterglowing phosphor and not the fast blue ignition reaction. This might put some sense into why those glasses can offer some relief in some cases.
Edit: Found the article and realized I got it slightly wrong but the effect is the same: the blue part flickers more.
"The red emission from the phosphor has a slow time decay, and so the red light has a low amount of flicker (the red light is integrated over time). The blue emission is very fast and has the most flicker."