The thing is, anything, when taken as a whole, including all perspectives, will be gray.
Is torture right or wrong? Well, as a whole, it may be gray, but each individual case will either be black or white.
For example, my views:
Is it wrong to torture a person for no reason? Yes. That's always wrong.
Is it wrong to torture a person if you know that torturing them may save a life? Depends on all the circumstances, but this can go either way. Each individual case of torture will either be white or black. It'll probably lean toward not wrong more often than not for me individually.
Is it wrong to torture someone who raped and murdered your child? No, not in my worldview. To me, that torture is always "white".
To the topic of "torture" is overall gray, but individual cases are going to be black or white every time.