[Animad]

I know I got software with my laptop which just puts a colour overlay over the whole screen, no matter whats on, it's called ClaroView. I don't know it's cost though and that means buying more software but it may be worth looking into as it could help you with many things. You can change it to like just a ruler which is coloured so if you tend to lose your way on the text too as well as other things