How to switch Diff Anything to blue and yellow diff colors

If red and green highlights are hard to distinguish, checking whether a line was added or removed takes extra effort. I make Diff Anything, and its free Blue and yellow setting gives Mac and Windows users another way to review a comparison.

To try it, open Settings → Appearance → Difference colors, choose Blue and yellow, then Save Settings. Additions become blue, removals yellow, and changed values neutral gray. Your choice is saved and works in light and dark themes.

You can check the meaning in words as well. Open the accessible workspace with Command-Shift-A on Mac or Control-Shift-A on Windows. A changed JSON field can read “name: changed from Ada to Grace,” so you can verify the exact values and move between differences using the keyboard.

A useful first check: compare two small files you already know. Include one addition, one removal, and one changed value, then compare the highlights with the written descriptions. All file comparison stays on your computer, with no AI involved.

I put the setup steps and screenshots of the same JSON comparison in both palettes here:

https://martingruner.com/blog/colorblind-friendly-diff-colors