MATLAB: How do i change color of the y-axes made by plotyy

plotyy axis color

I am trying to make the color of the left Y axis red and the color of the right Y axis blue. I can't figure out the right syntax.
Thanks in advance.
A snip of the code I have is below:
    close;
         % plot F23 vs. D in figure gcf       
         [AX,H1,H2]=plotyy(Dcurve,F23curve,W,V,'plot');
         AX
         set(gcf,'Position',[500,500,900,500]); 
         title('Click on all the discontinuities and then hit Return key');
         set(get(AX(1),'Ylabel'),'String','Force^(2/3) [N^(2/3)]');
  % ? %  set(get(AX(1),'color'),'red');
         set(get(AX(2),'Ylabel'),'String','Force [N]');
  % ? %  set(get(AX(2),'color'),'blue');
         xlabel('Indentation depth [m]');
         set(H1,'LineStyle','-');
         set(H1,'color','red');
         set(H2,'LineStyle','-');
         set(H2,'color','blue');
         hold on
         % user double click on all discontinuities and press enter  
         [xm,ym]=ginput;

Best Answer

An example:
x = 0:0.01:20;
y1 = 200*exp(-0.05*x).*sin(x);
y2 = 0.8*exp(-0.5*x).*sin(10*x);
[AX,H1,H2] = plotyy(x,y1,x,y2,'plot');
set(AX,{'ycolor'},{'r';'b'})  % Left color red, right color blue...
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