Help: Need to make coulored 2D plot, with coulor changing according to value of a third variable

The graph comes from ploting a vector of displacement "d" (y axis), v/s a vector of time (x axis). So i have a certain displacement for each time. There is a third vector "z"(the same length than de "d" and "t" vector) that has only values between 0 and 1. So i have also a value of "z" for each time. there is a certain relation between "d" and "z" (proportional in a certain way) So what i need is a plot "d" v/s t, in wich the colour of the plot (t vs d) changes depending on the value that takes z for the same time period, for ex: - if Z in t=20 is between 0 and 5, the plot d v/s t in that same instant is plotted in black - if z is t=30 is between 5 and 7, the plot d v/s t in that same instant is plotted in black green

The plot is something like the file added.

Thanks!