I’ve been trying to make this happen via CSS. The graph view uses so it’s difficult to target approriately.
In app.css there is code for .graph-view.color-fill-1 (repeated for 1-6). I assumed this had something to do with depth from current note, which would be terrific, but it doesn’t do anything as far as I can tell.
My sense is that this existed, but was replaced with the “Color Groups”. Is it possible to target the current file in a search?