Look at something at least 50m away for 30 seconds every 10 minutes.
I do something similar, but mine is 20-20-20 :) I also have tinted lenses when i use a computer
Aren't tinted lenses a problem for color accuracy? (Especially if you deal with graphics)
Possibly. I have tinted lenses that reflect away "excess" blue light, making everything look a little more yellow, but it's very subtle and I don't know that the effect is strong enough to be a problem. In fact, I'd say that the color warmth parameters on my monitor have a stronger effect than my glasses do.