I believe that grey exists. There are many feelings and thoughts that do not necessarily conform to the definite world of right and wrong. You surely need to have better communication skills to ensure that being grey doesn’t lead you to being misunderstood, but it is okay.
Then there are situations where there is no room for grey. There is no scope for interpretations. It’s either black or white. If you say it is not white, then it is automatically black. If you do not say it is white, even then it is black.
And an important learning is to know when and how to differentiate. To understand, to learn, and to move on.