I have created my own versions of this piece.
I have used a portrait or myself which a class friend had taken of me. I then tried to cover my identity by using water and ink to cover some of my features. I used the primary colours of red, yellow and blue. The first piece I had tried I used all three colours to try make it look effective. I also tried just red as it could represent fire like Sarah Lucas. The colour red also represents danger, and blood. I also tried another one with fiery colours red and yellow, which then made orange. I think this process has worked well for me as I have been experimental with a variety of different colours to see what work best to my theme.