Colour options in plotting graphs

I have two for-loops and i need to change the colour of the plot in every iteration of the outer for loop and the same colour for the inner for-loop. The code is as follows;

for t=0:0.01:1.5

f=@(time,y)[y(2);eqn];

      for y20=0:0.1:1.5
          hold on
          [ts,ys] = ode45(f,[0,10],[y20;0]);
              plot(ys(:,1),ys(:,2),'color',rand(1,3))
      end
   hold off
  end

Answer 1

[KSSV]

figure
hold on
for i = 1:3
    plot(rand(10,1),'r')
    for j = 1:2
        plot(rand(1,10),'color',rand(1,3))
    end
end