For some reason this experience you are describing reminds me of a passage in "One hundred years of solitude" where a character is said to fall in love with a woman that only exists when she is needed.
This looks promising, thank you. I always used GitGutter and having to remember “: GitGutterDiffOrig” just to see my changes is a pain sometimes, this plugin seems more intuitive.
https://www.svgrepo.com
I find the site very user friendly as it lets you customize the stroke's width, color etc, see how it looks like and copy the modified version.
I have not used the app but the developer Paul Hudson was the guy who taught me Swift and UIKit when I was in college and wanted to dig into iOS development for fun. He’s truly gifted when it comes to teaching.