plotting data with different color

I have a matrix of 120 x 3 dimension.I want to plot column 1 data with green circles, column 2 data with red circles and column 3 data with blue circles against black background.Please let me know how can I do that?

Answer 1

[Sven]

data = rand(120,3)
figure, hold on
plot(data(:,1),'go')
plot(data(:,2),'ro')
plot(data(:,3),'bo')
set(gca,'Color','k')

If you wanted, say, filled circles with a white outline:

figure, hold on
plot(data(:,1),'wo','MarkerFaceColor','g')
plot(data(:,2),'wo','MarkerFaceColor','r')
plot(data(:,3),'wo','MarkerFaceColor','b')
set(gca,'Color','k')

[Mahua Nandy(Pal)]

thanks