Quote Originally Posted by handrawn View Post
these things are subjective if you have no benchmark to compare them with. or no other expectation

Click image for larger version. 

Name:	blender sysreq.png 
Views:	123 
Size:	74.8 KB 
ID:	126133

it will make a difference

....

but as the main query is regarding colour, the monitior and the render settings are the place to start as has already been said

I thought of cataracts too - if a medical issue exists, then I would be looking to advice from a [medical] professional in the use of computers for such purposes...
I can definitely say that my wife's cataracts ( unsurprisingly ) makes her see everything as being darker than I do. She wasn't aware she had them until she had an eye test. Just over a week ago our change to a larger 4K TV brought out some unexpected enthusiasm from her because the TV picture became clearer.

Her perception of the world as being darker has increased as her cataracts have worsened. Don't get me wrong, she does everything that she could do before, but she's definitely lost some definition and brightness. Roll on her operation.