Can't read gcode text in dark mode when editing.

How do I tell what one it is?

You could post your INI-file, a screenshot or whatever command you use to start your G-code editor.

2.9.2

I press this to enter the editor within Linuxcnc.
I have changed the editor in the ini from gedit to mousepad with no change. 
 

You probably run Gmoccapy 3.4.6.
I suggest to update LinuxCNC to the latest version, then you will find a new setting called "G-code theme" where you can select another theme for the G-code.

Thank you. This brings up yet another issue, I have been trying to update but I don't believe I have a good repository. I keep getting an error saying the address doesn't have a release. I have attempted several different locations And I entered them into synapse. But I must be doing something wrong.

It appears I'm on my own... again. So far nothing worked to get a repository to update LinuxCNC. So I said f-it and completely deleted the partition and reinstalled linuxcnc completely from scratch. I am gad I did.  The new installation resolved several issues. Most importantly, the editor in Linuxcnc that nothing I tried worked to get it resolved, is now resolved.