Because of the fact that my eyesight ain't great, I had been looking at doing something like FactoCad (https://forums.factorio.com/viewtopic.php?t=5038&start=30) but not as DRASTIC.

What I have been doing instead, is just directly editing PNG images in the \data\base\graphics folder, mainly because I want to play online and most people won't be crazy keen to play Factorio with "my idea" of better graphics, much less what you are doing here, which will throw off a lot of people.

What I am going to do now is backup the graphics folder, and manually overwrite everything with your graphics so I can test the graphics player side ONLY without annoying anyone else. I'll comment later :)