coloring the lines

hi,
How can I color each line with a different color?

cls
color 12
print " hello my friend";
print" today is sunday";
print" He is a doctor";

How can I color only the second line in"blue"?

thanks

cls

print " hello my friend";
color 12 ,5
print" today is sunday";
color 10 ,4
print" He is a doctor";