Need help forming randomly colored lines, that are equidistant(ex included)

Question

My assignment: The
top-right cell requires horizontal lines that are equidistant in the cell. Each line is 10 pixels apart. Additionally, the lines need to be colored randomly in any possible red, green and blue range.
example: http://i68.photobucket.com/albums/i35/stxda/example.jpg
(example of what I need to do)
what I have now: http://i68.photobucket.com/albums/i35/stxda/current.jpg
I have all the lines coded for the top right cell, but I do not know how to get the colors random. I only know how to set all the lines to one single color.
Below is my coding:
(please try this out and help me code it)
my AIM screen name is sTxDa if there are any questions/comments
import java.awt.*;
import java.applet.*;
import java.util.*;
public class Lab06G90 extends Applet
public void paint(Graphics g)
// BELOW is for the top left cell and box (which is int a and the box's frame)
int width = 800;
int height = 600;
g.drawRect(10,10,width,height);
g.drawLine(410,10,410,610);
g.drawLine(10,310,810,310);
for (int a = 20; a <= 400; a += 10)
g.drawLine(a,20,a,290);
// BELOW is for the top right cell, which is int b. so far
// i've only done the lines, and not yet the random colors
for (int b = 10; b <= 290; b += 10)
g.drawLine(420,b,800,b);
}

Answer 1

but I do not know how to get the colors randomUse the Random class.