you definitely can change anything you want about the image you are generating, thats what the commenter above is saying. there are many tools you can use that can edit the image after or during generation. you can even just put it any image editor and back for even more fine tuning. the point of these ai's isnt to completely replace the artistic processes. but to enhance it with new tools. the same way digital art did when it was first introduced to the art world
ai art :(