Changing the node text color (custom theme)

Hello!
I am creating a light theme for Unreal Engine. I’ve been able to change most of the text color with the theme editor in “Editor Preferences”. I’ve also changed the color of the nodes by editing the images in the UE install folder (Engine/Content/Editor/Slate/Graph). Now I’m trying to find out how to change the color of the node text (etc “add pin” or “play” and “stop”). I’ve dug around in the engine source code but I’m having a hard time finding the right files…

screenshot1

Any help is greatly appreciated.

EDIT1: I think I have found where the settings for the text color is using the “Widget Reflector” (Ctrl + Shift + W in the editor). I realized when trying to edit the source files in the UE installation directory that I need to download the source code to be able to compile the changes I make. I’m going to download the source code and hope I have enough space on my harddrive… To be continued…