If i were to change the default color of a blueprint node, more specifically “Switch on name”
How can i do that without creating a macro/function with it
Do you mean changing the color of the actual node?
Collapse and colour it ugly?
Yes
without creating a macro/function with it
you’d probably need to dig into the BaseEditorPerProjectUserSettings.ini I imagine. but that’s just guessing.
You may be interested in the marketplace asset “darker nodes” though. I believe it offers pretty robust color editing for the blueprint editor.
It’s neither a macro or a function. 
I’ll try to look into some of the files, but wasn’t sure where to look
If you have more suggestions, please let me know
Well, to be honest my suggestion would be to waste no time energy on this because there is so many options already.
If you want to make a thing standout select it and hit C to wrap with a comment box. You can color the comment box and so on to make it stand out.