Currently used diffEditor.*LineBackground and diffEditor.*TextBackground colors are barely distinguishable in both GitHub Dark and GitHub Light themes:
For example, here are screenshots of vscode builtin themes:
github.com diffeditor uses more contrasting colors as well:
Currently used
diffEditor.*LineBackground
anddiffEditor.*TextBackground
colors are barely distinguishable in both GitHub Dark and GitHub Light themes: For example, here are screenshots of vscode builtin themes: github.com diffeditor uses more contrasting colors as well: