Clone stamp tool
I am in the middle of editing an image in Photoshop CC 2017. I have noticed that something I did earlier is wrong. To rectify this I decided to use the clone stamp tool. I selected the clone stamp tool and then I selected Alt+click - in Windows to select the pixels I wanted to copy from. Why when I have clicked on a particular point does Photoshop decide to use a different colour which seems to me to relate to the tool size - I have selected a white area as the area to copy from and on the right had side there is a black area - when I move to the right hand side of the area I want to repair Photoshop chooses to use black, not white as the fill colour? Is there a kind of radius setting in there which is related to the tool size and the fill colour - i.e. if white is within 40 pixels of the area to be filled it will use white but if black is within 40 pixels it will use black.
Have I a setting wrong that I have overlooked?
Help would be appreciated please.
