I've used 'plum' tinted glasses before and they did help cut the glare for me. The orange tint helped my differentiate things more, but they also made everything brighter.

I personally love using color overlays and tinted lenses, I feel like it makes everything a lot easier to read for me. I use yellow-tinted clip-on sunglasses over my regular glasses when I use my computer, and I use the color overlay feature on my iPhone (I usually set it to a blue-green kind of color). It all depends on what I have to do on a particular device. On my phone, I'm trying to take down the contrast because it hurts my eyes. On my computer, I'm usually writing or drawing so I need the yellow tint to keep my eyes from being too strained. I did use an overlay for a while but I recently started using the tinted lenses and I like that better for the computer.