mˈɛni kˈʌlɚ ɡɹˈæfz hæv dɪskɑːntɪnjˈuːᵻɾiz, wˌɛɹ ɪnstˈɛd ʌv ˈiːvənli tʃˈeɪndʒɪŋ bɹˈaɪtnəs ænd kˈʌlɚ, ɪt sˈʌdənli tʃˈeɪndʒᵻz, ˈiːvən wɛn ðə fˈʌŋkʃən ɪtsˈɛlf ɪz stˈɪl smˈuːð.
Many color graphs have discontinuities, where instead of evenly changing brightness and color, it suddenly changes, even when the function itself is still smooth.