change the color of the second Y-axis

ı just want to change the color of the y axis to black how can i do this could you please write the code to change this

Answer 1

[Voss]

yyaxis('left')
plot(1:10);

yyaxis('right')
plot(10:-1:1)

ax = gca();      % the current axes is the right axes at this point

ax.YColor = 'k'; % set the right axes YColor to black