You cannot achieve this with the 'plot' command as it does not offer the functionality to control styles for individual markers on a line plot.
However, you can use the 'scatter' function to control the color for individual markers and use the 'plot' command to overlay it with your line plot.
For example :
x = [1 2 3 4 5];
y = [2 4 3 2 6];
c = [ 0 0 1; 0 1 0; 1 0 0; 1 0 1; 0 1 1];
f = plot(x, y, '-')
hold on
scatter(x,y, [], c, 'filled')
hold off
