Could this be work to ease the pain in my eye

Turn off the computer completely. Sheesh. It doesn't matter if what you're watching is green - if you have pain, it's a warning. Heed it.

I doubt "green stuffs" is a viable concept for relief for strained eyes. You could either use special glare free computer monitors or barring that buy an Anti-Glare Filter that covers the computer monitor.

i find that if i've been staring at the computer for a while looking at green stuff is a relief

i go outside and look at the trees, the gardens, the lawns