if U look at this illusion for 10 seconds and keep looking at the dot it will be all in colors and it U stop looking at the black dot it will be black and white https://www.google.com/search?q=black+dot+picture+color+illusion&rlz=1CATAVM_enUS930US930&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjmspTKgYbvAhUBHs0KHeRtBUcQ_AUoAXoECCEQAw&biw=1517&bih=685&safe=active&ssui=on#imgrc=W0yfPB0Nz8kXtM