the most noticeable effect of doing this (at least in my experience) is you can't pick out the shade of colours in your peripheral after a while. You'll see a d

the most noticeable effect of doing this (at least in my experience) is you can't pick out the shade of colours in your peripheral after a while. You'll see a dull or pastel colour, turn your eyes directly to look at the object and it's actually brightly coloured.