Thanks for clarifying. To do this you turn off the standard axes settings and add Extra axis commands that allow for more customization.
You will probably want to turn off the Axis box. You can control click on the graph to change that setting.
Add the Extra axis command from the Command menu. It is near the bottom of the command list.
Once you add one, you can highlight the command and use command-C to copy and command-V to paste.
Now you have both commands. Here are the settings … where you have to uncheck “Draw x/y numbers” to hide the default settings.
Expand the Extra axis command to get the color settings. You can set the line and the font color. Here I just made them the same.
Here is the result …
Hope this helps!